UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                  ------------

                                  SCHEDULE 13D

                    Under the Securities Exchange Act of 1934


                                    LASMO plc
                                ---------------
                                (Name of Issuer)


                           Ordinary Shares of 25p each
                           American Depositary Shares
                          ----------------------------
                         (Title of Class of Securities)

                           G53831106: Ordinary Shares
                      501730204: American Depositary Shares
                     ---------------------------------------
                                 (CUSIP Numbers)

J. Barclay Collins II                                with copies to:
Executive Vice President and General Counsel         Timothy B. Goodell, Esq.
Amerada Hess Corporation                             White & Case LLP
1185 Avenue of the Americas                          1155 Avenue of the Americas
New York, NY  10036                                  New York, NY 10036
(212) 997-8500                                       (212) 819-8200

           (Name, Address and Telephone Number of Person Authorized to
                      Receive Notices and Communications)

                                November 6, 2000
                             ---------------------
             (Date of Event which Requires Filing of this Statement)

If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  which is the subject of this  Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following box .


CUSIP No. G53831106 (Ordinary Shares) and 501730204 (ADSs)


- -------- -----------------------------------------------------------------------
1        NAME OF REPORTING PERSON
         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

         Amerada Hess Corporation           I.R.S. Identification No. 13-4921002

- -------- -----------------------------------------------------------------------
 2       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP               (a) / /
                                                                        (b) / /
- -------- -----------------------------------------------------------------------
 3       SEC USE ONLY


- -------- -----------------------------------------------------------------------
 4       SOURCE OF FUNDS

         BK; 00

- -------- -----------------------------------------------------------------------
 5       CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED       / /
         PURSUANT TO ITEMS 2(d) or 2(e)

- -------- -----------------------------------------------------------------------
 6       CITIZENSHIP OR PLACE OF ORGANIZATION

         Delaware

- ----------------------------------- ------- ------------------------------------
NUMBER OF SHARES BENEFICIALLY        7      SOLE VOTING POWER
OWNED BY EACH REPORTING PERSON              None
WITH
                                    ------- ------------------------------------
                                     8      SHARED VOTING POWER
                                            270,718,581
                                    ------- ------------------------------------
                                     9      SOLE DISPOSITIVE POWER
                                            None
                                    ------- ------------------------------------
                                     10     SHARED DISPOSITIVE POWER
                                            None
- -------- -----------------------------------------------------------------------
11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
         270,718,581
- -------- -----------------------------------------------------------------------
12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
         CERTAIN SHARES                                                 / /

- -------- -----------------------------------------------------------------------
13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

         20.1%
- -------- -----------------------------------------------------------------------
14       TYPE OF REPORTING PERSON

         CO
- -------- -----------------------------------------------------------------------

SCHEDULE 13D

Item 1.  Security and Issuer

         This  statement on Schedule  13D relates to the Ordinary  Shares of 25p
each ("Ordinary Shares") and American  Depositary Shares  representing  Ordinary
Shares ("ADS") of LASMO plc, a public limited  company  incorporated  in England
and Wales ("LASMO"), the principal executive offices of which are located at 101
Bishopsgate, London EC2M 3XH, England.

Item 2.  Identity and Background

         (a) - (c); (f) This statement on Schedule 13D is being filed by Amerada
Hess Corporation  ("Amerada  Hess"),  a corporation  organized under the laws of
Delaware which is an integrated  energy company  engaged in the  exploration for
and the production,  purchase,  transportation and sale of crude oil and natural
gas,  the  refining  of crude oil and the sale of  refined  petroleum  products.
Exploration and production activities take place primarily in the United States,
the  United  Kingdom,   Norway,  Denmark,  Brazil,  Algeria,  Gabon,  Indonesia,
Azerbaijan  and  Thailand.  The  address of  Amerada  Hess'  principal  place of
business is 1185 Avenue of the Americas, New York, New York, 10036.

         On November 6, 2000,  Goldman  Sachs  International  ("Goldman  Sachs")
announced,  on behalf of Amerada Hess, a recommended offer for the entire issued
and to be issued share capital of LASMO (the "Offer"). The Offer will be made on
the following  basis: for each 78.7 Ordinary Shares held Pound Sterling 98.29 in
cash and 1 new  share of  Amerada  Hess  Common  Stock  (the "New  Amerada  Hess
Shares") and for every 78.7 ADSs (each ADS  representing  three Ordinary Shares)
held, Pount Sterling 294.87 in cash and 3 New Amerada Hess Shares.

         If  consummated,   the  Offer  will  result  in  the  issue  of  up  to
approximately 17.1 million New Amerada Hess Shares  (representing  approximately
16.3 per cent of the  ordinary  share  capital of Amerada  Hess as enlarged as a
result of the Offer).  The Offer is subject to a number of conditions  including
(i) the receipt of valid acceptances by Amerada Hess in respect of not less than
ninety per cent (90%) (or such lesser  percentage as Amerada Hess may decide) in
nominal value of Ordinary Shares (including Ordinary Shares represented by ADSs)
provided that this  condition  will not be satisfied  unless  Amerada Hess shall
have acquired  Ordinary Shares (including  Ordinary Shares  represented by ADSs)
carrying, in aggregate, more than fifty per cent (50%) of the voting rights then
exerciseable  at general  meetings of LASMO and (ii) the New Amerada Hess Shares
having been authorized for listing,  subject to official notice of issuance,  on
the New York Stock  Exchange (the "NYSE") and the  registration  statement to be
filed by Amerada Hess with the United States Securities and Exchange  Commission
in respect of the New Amerada Hess Shares  having been declared  effective.  The
Long Form Press Release, dated as of November 6, 2000, issued by Amerada Hess in
connection with the Offer is incorporated  herein by reference as Exhibit 1. The
Short Form Press Release,  dated as of November 6, 2000,  issued by Amerada Hess
in connection with the Offer is incorporated herein by reference as Exhibit 2.

         The  transaction  has  been  unanimously  approved  by  the  boards  of
directors of both Amerada Hess and LASMO. Each of the directors of LASMO,  being
Joseph Darby,  Thierry Hughes Baudouin de Jean Baptiste de Rhoder,  Paul Colbeck
Murray,  Roy Gregory Reynolds,  Nigel Victor Turnball,  Timothy Pienne Brennand,
Hugh Edward Norton and Antony Peverell  Hichens ( the "LASMO  Directors"),  have
given irrevocable  undertakings to Amerada Hess and Goldman Sachs (the "Director
Undertakings")  pursuant  to which  they have  agreed,  subject to the terms and
conditions  set  forth  therein,  to accept  the  Offer and to vote (on  certain
resolutions  bearing on the Offer) their combined total of approximately 0.1% of
the Ordinary Shares as directed by Amerada Hess. The Director  Undertakings  are
described in more detail in Item 6. The  Director  Undertaking  between  Amerada
Hess, Goldman Sachs, LASMO and Joseph Darby is incorporated  herein by reference
and is attached as Exhibit 3 hereto.  The Director  Undertaking  between Amerada
Hess,  Goldman  Sachs,  LASMO and Thierry  Hughes  Baudouin de Jean  Baptiste de
Rhoder is incorporated  herein by reference and is attached as Exhibit 4 hereto.
The Director  Undertaking  between Amerada Hess,  Goldman Sachs,  LASMO and Paul
Colbeck Murray is incorporated  herein by reference and is attached as Exhibit 5
hereto. The Director  Undertaking between Amerada Hess, Goldman Sachs, LASMO and
Roy Gregory  Reynolds is  incorporated  herein by  reference  and is attached as
Exhibit 6 hereto. The Director  Undertaking between Amerada Hess, Goldman Sachs,
LASMO and Nigel  Victor  Turnball is  incorporated  herein by  reference  and is
attached as Exhibit 7 hereto.  The Director  Undertaking  between  Amerada Hess,
Goldman  Sachs,  LASMO and Timothy  Pienne  Brennand is  incorporated  herein by
reference and is attached as Exhibit 8 hereto. The Director  Undertaking between
Amerada Hess, Goldman Sachs, LASMO and Hugh Edward Norton is incorporated herein
by  reference  and is attached  as Exhibit 9 hereto.  The  Director  Undertaking
between  Amerada  Hess,  Goldman  Sachs,  LASMO and Antony  Peverell  Hichens is
incorporated herein by reference and is attached as Exhibit 10 hereto.

         Amerada Hess and LASMO have entered into an agreement (the  "Inducement
Agreement")  pursuant to which LASMO has agreed not to solicit a takeover  offer
from any third party and to pay Pound Sterling 24 million to Amerada Hess if the
Offer  lapses  or is  withdrawn  under  certain  circumstances  or if the  LASMO
Directors withdraw their recommendation, and in certain other circumstances. The
Inducement Agreement contains certain confirmations  relating to the granting of
subscription  rights  and  the  issuance  of new  Ordinary  Shares  and  certain
confirmations  regarding Ordinary Shares issued pursuant to various option plans
of LASMO.  The  Inducement  Agreement is described in more detail in Item 6. The
Inducement  Agreement  between Amerada Hess and LASMO is incorporated  herein by
reference and is attached as Exhibit 11 hereto.

         Two of LASMO's principal shareholders, Electrafina S.A. ("Electrafina")
and  Schroder  Investment  Management  Limited  ("SIM")  have  also  each  given
undertakings  (the  "Irrevocable  Undertakings")  with  Amerada Hess and Goldman
Sachs pursuant to which  Electrafina  and SIM have agreed,  subject to the terms
and conditions set forth therein, to accept the Offer and to vote their 7.3%, in
the case of  Electrafina,  and 12.8%, in the case of SIM, as directed by Amerada
Hess. The Irrevocable Undertakings are described in more detail in Item 6 below.
The Irrevocable Undertaking with Electrafina is incorporated herein by reference
and is attached as Exhibit 12 hereto.  The Irrevocable  Undertaking  with SIM is
incorporated herein by reference and is attached as Exhibit 13 hereto.

         Attached as Schedule I hereto is a list of the  executive  officers and
directors of Amerada Hess, which contains the following information with respect
to each such  person:  (i)  name;  (ii)  business  address;  and  (iii)  present
principal  occupation or employment and the name, principal business and address
of any corporation or other  organization in which such employment is conducted.
All such persons are citizens of the United States,  except for W.S.K.  Laidlaw,
who is a citizen of the United Kingdom.

         (d) - (e) During the last five years  neither  Amerada  Hess nor to the
best of Amerada Hess' knowledge,  any person named on Schedule I hereto has been
convicted in a criminal  proceeding  (excluding  traffic  violations  or similar
misdemeanors)  or has  been a  party  to a civil  proceeding  of a  judicial  or
administrative  body of competent  jurisdiction as a result of which such person
was or is  subject  to a  judgment,  decree  or  final  order  enjoining  future
violations  of, or prohibiting  or mandating  activities  subject to, federal or
state securities laws or finding any violation with respect to such laws.

Item 3.  Source and Amount of Funds or Other Consideration

         Amerada Hess has not purchased any Ordinary Shares (including  Ordinary
Shares  represented by ADSs) as of the date of this  statement.  It is estimated
that full acceptance of the Offer would require,  in addition to the issuance of
approximately  17.1 million New Amerada Hess Shares, the payment by Amerada Hess
of a maximum cash amount of  approximately $3 billion in cash. In the event that
Amerada Hess does acquire Ordinary Shares (including Ordinary Shares represented
by ADSs) pursuant to the Offer,  the funds to be used for such purchases will be
obtained from Amerada Hess' working capital,  the issuance of debt securities or
bank borrowings.

Item 4.  Purpose of the Transaction

         The  purpose of the Offer is to acquire all the issued and to be issued
Ordinary Shares and ADSs of LASMO. If Amerada Hess acquires more than 90% of the
outstanding  Ordinary Shares (including  Ordinary Shares represented by ADSs) it
will be able to effect a compulsory acquisition procedure in accordance with the
United Kingdom Companies Act, and upon consummation thereof,  LASMO would become
a wholly owned subsidiary of Amerada Hess.

         Subject to certain matters  described  below, it is currently  expected
that,  initially  following  the  consummation  of the Offer,  the  business and
operations  of  LASMO  will  generally  continue  as they  are  currently  being
conducted.  Amerada Hess will  continue to evaluate all aspects of the business,
operations,  capitalization  and  management of LASMO during the pendency of the
Offer and after the consummation of the Offer and will take such further actions
as it deems  appropriate  under the  circumstances  then existing.  Amerada Hess
intends  to  seek  additional   information  about  LASMO  during  this  period.
Thereafter,  Amerada  Hess  intends  to  review  such  information  as part of a
comprehensive  review  of  LASMO's  business,  operations,   capitalization  and
management.  As a result of the completion of the Offer, the interest of Amerada
Hess in LASMO's net book value and net  earnings  will be in  proportion  to the
number of  Ordinary  Shares  and ADSs  acquired  in the Offer.  If a  compulsory
acquisition is consummated,  Amerada Hess' interest in such items and in LASMO's
equity  generally  will  equal 100% and  Amerada  Hess will be  entitled  to all
benefits resulting from such interest, including all income generated by LASMO's
operations  and any future  increase in LASMO's value.  Similarly,  Amerada Hess
will also bear the risk of losses generated by LASMO's operations and any future
decrease in the value of LASMO after a compulsory  acquisition.  Subsequent to a
compulsory acquisition,  the current holders of LASMO's Ordinary Shares and ADSs
will cease to have any  direct  equity  interest  in LASMO and will not have any
right to vote on corporate matters.

         Following the consummation of the Offer,  Amerada Hess intends to apply
to the UK Listing  Authority to have the Ordinary Shares delisted,  apply to the
London Stock Exchange to have the Ordinary  Shares cease  trading,  apply to the
NYSE to have the ADSs delisted,  terminate the deposit  agreement  through which
the ADS program is operated  and seek to have the  registration  of the Ordinary
Shares and the ADSs under the  Securities  Exchange Act of 1934, as amended (the
"Exchange Act") terminated.

         Amerada Hess may at any time and from time to time  acquire  additional
Ordinary Shares or ADSs or securities  convertible or exchangeable  for Ordinary
Shares or ADSs or dispose of Ordinary Shares or ADSs. Any such  transactions may
be  effected  at any time  and from  time to  time,  subject  to any  applicable
limitations of the Securities Act of 1933, as amended and the Exchange Act.

         Except  as  described  herein,  Amerada  Hess has no  present  plans or
proposals that would result in any extraordinary corporate transaction,  such as
a  merger,   reorganization,   liquidation   involving   LASMO  or  any  of  its
subsidiaries,  or purchase,  sale or transfer of a material  amount of assets of
LASMO or any of its  subsidiaries  or in any other  material  changes to LASMO's
capitalization, dividend policy, corporate structure, business or composition of
the board of directors of LASMO or the management of LASMO,  except that Amerada
Hess intends to review the  composition  of the boards of directors  (or similar
governing  bodies) of LASMO and its  subsidiaries  and to cause the  election to
such  boards of  directors  (or  similar  governing  bodies)  of  certain of its
representatives following the consummation of the Offer.

Item 5.  Interest in Securities of the Issuer

         (a) As a  result  of the  Director  Undertakings  and  the  Irrevocable
Undertakings,  Amerada  Hess  may  be  deemed  to be  the  beneficial  owner  of
270,718,581  Ordinary Shares,  which would represent  approximately 20.1% of the
Ordinary  Shares  (including  Ordinary Shares  represented by ADSs)  outstanding
(based on 1,344,328,323  Ordinary Shares outstanding as reported in LASMO's Form
20-F filed on June 29, 2000).

         (b)  Pursuant  to  the  Director   Undertakings   and  the  Irrevocable
Undertakings,  Amerada  Hess has shared  power to vote all the  Ordinary  Shares
owned by the Directors, Electrafina and SIM (270,718,581 Ordinary Shares) in the
limited circumstances set forth in the Director Undertakings and the Irrevocable
Undertakings.

         (c) Except as described  herein,  neither Amerada Hess nor, to the best
of Amerada Hess' knowledge,  any other person referred to in Schedule I attached
hereto,  beneficially owns or has acquired or disposed of any Ordinary Shares or
ADSs during the past 60 days.

         (d) Not applicable.

         (e) Not applicable.

Item 6.  Contracts,  Arrangements,  Understandings or Relationships with Respect
         to Securities of the Issuer

         Except as described  herein,  neither  Amerada Hess nor, to the best of
Amerada  Hess'  knowledge,  the  persons  named in  Schedule  I  hereto  has any
contracts,  arrangements,  understandings or relationships  (legal or otherwise)
with any persons with respect to any  securities  of LASMO,  including,  but not
limited  to,  transfers  or  voting  of any  securities,  finder's  fees,  joint
ventures,  loan or option  arrangements,  puts or calls,  guarantees or profits,
division of profits or loss, or the giving or withholding of proxies.

1.       Director Undertakings

         The terms of the  Director  Undertakings  are the same in all  material
respects  except for the amount of  Ordinary  Shares  involved  and,  in certain
instances,  the Directors will be providing not only Ordinary  Shares but shares
that will be derived  from  certain  option  plans.  Joseph  Darby owns  119,458
Ordinary Shares and is entitled to receive  300,869  Ordinary Shares pursuant to
option plans. Thierry Hughes Baudouin de Jean Baptiste de Rhoder owns a total of
18,275  Ordinary  Shares.  Paul Colbeck  Murray owns a total of 65,268  Ordinary
Shares and is entitled to receive  141,039  Ordinary  Shares  pursuant to option
plans. Roy Gregory Reynolds owns a total of 16,465 Ordinary Shares. Nigel Victor
Turnball owns a total of 32,442 Ordinary Shares.  Timothy Pienne Brennand owns a
total of 16,807  Ordinary  Shares.  Hugh  Edward  Norton  owns a total of 12,442
Ordinary  Shares.  Finally,  Antony  Peverell  Hichens  owns a total  of  43,122
Ordinary Shares.

         Pursuant  to the  Director  Undertakings,  each  of the  Directors  has
undertaken  to Amerada Hess that they will accept the Offer.  Each  Director has
also  agreed  that,  until  the date on which  the  Offer  ceases to be open for
acceptances,  each  Director  will  exercise the voting  rights  attached to his
Ordinary  Shares in connection  with certain  resolutions  relating to the Offer
only in  accordance  with  Amerada  Hess'  directions.  Each  Director  has also
undertaken  to use his best efforts to procure that LASMO and the LASMO board of
directors  provide all reasonable  assistance to Amerada Hess in connection with
the Offer.

2.       Inducement Agreement

         Pursuant to the Inducement Agreement, LASMO has agreed not to solicit a
takeover  offer  from any third  party and to pay Pound  Sterling  24 million to
Amerada Hess if, inter alia,  (i) the Offer lapses or is withdrawn  following an
announcement,  made  during  the  period  that the Offer  remains  open,  of any
proposal  involving  a  change  of  control  of  LASMO  by a third  party or any
acquisition  or disposal of assets with a value in excess of Pound  Sterling 100
million which,  in either case, is completed at any time in 2001; (ii) while the
Offer  remains  open,  the board of directors  of LASMO ceases to recommend  the
Offer or qualifies  its  recommendation  or; (iii) LASMO takes action which will
prevent a condition to the Offer being fulfilled in a material way.

         LASMO  has also  agreed  with  Amerada  Hess that it will not grant any
further  subscription  rights,  nor will it allot or issue new Ordinary  Shares,
except insofar as required under  previously  granted options or other rights to
acquire  Ordinary Shares which cannot be satisfied by the payment of cash or the
transfer of existing issued shares.

         The Inducement Agreement also contains certain confirmations from LASMO
regarding the ownership of Methodplan Ltd. ("Methodplan"),  the number of shares
of Methodplan (the "Methodplan Shares") and the ability to use Methodplan Shares
to satisfy the  exercise of share  options  granted to employees of the eligible
subsidiaries  of LASMO pursuant to certain option schemes of LASMO.  Pursuant to
the Inducement  Agreement,  LASMO agrees to procure that (i) Methodplan will not
sell or otherwise  dispose of or encumber any  Methodplan  Shares or acquire any
further Ordinary Shares; and (ii) Methodplan will accept the Offer in respect of
the  Ordinary  Shares  owned by it as Amerada Hess may direct no later than five
(5) business days after the date of the making of the Offer.

         The  Inducement  Agreement  also  contains  details  regarding  how the
exercise of share  options under the option  schemes are to be satisfied.  LASMO
agrees to procure  that,  during the period of the Offer,  no further  awards or
grants of options will be made under the option  schemes and that LASMO will not
allot or issue any  further  share  capital  except as  required  by the  option
schemes.

3.       Irrevocable Undertakings with Electrafina and SIM

         The terms of the Irrevocable  Undertakings with Electrafina and SIM are
the same in all material  respects except that the Irrevocable  Undertaking with
Electrafina involves 98,336,161 Ordinary Shares and the Irrevocable  Undertaking
with SIM involves 171,616,233 Ordinary Shares.

         Pursuant  to the  Irrevocable  Undertakings,  Electrafina  and SIM have
undertaken to Amerada Hess that they will accept the Offer.  Electrafina and SIM
have also agreed  that,  until the date on which the Offer ceases to be open for
acceptance,  Electrafina  and SIM will  exercise the voting  rights  attached to
their Ordinary  Shares in connection  with certain  resolutions  relating to the
Offer only in accordance with Amerada Hess' directions.

         Electrafina's  and SIM's  obligations to accept the Offer will lapse in
the event of the announcement of an offer by a third party for the fully diluted
Ordinary  Shares  which is more than one  hundred and ten per cent (110%) of the
lower of (a)  180p and (b) the  Offer  as at the  close of  trading  on the NYSE
trading day immediately  preceding such  announcement  (translating the value of
New  Amerada  Hess Shares from U.S.  dollars to  sterling at the  exchange  rate
prevailing at the time).

Item 7.  Material to be filed as Exhibits

         1.     Long Form Press Release,  dated as of November 6, 2000. The Long
                Form  Press  Release  was filed by  Amerada  Hess on Form 8-K on
                November 6, 2000 and is incorporated herein by reference.

         2.     Short Form Press  Release,  dated as of  November  6, 2000.  The
                Short Form Press  Release was filed by Amerada  Hess on Form 8-K
                on November 6, 2000 and is hereby incorporated by reference.

         3.     Letter  Agreement  dated as of  November  6,  2000 by and  among
                Amerada Hess Corporation, Goldman Sachs International, LASMO plc
                and Joseph Darby.

         4.     Letter  Agreement  dated as of  November  6,  2000 by and  among
                Amerada Hess Corporation, Goldman Sachs International, LASMO plc
                and Thierry Hughes Baudouin de Jean Baptiste de Rhoder.

         5.     Letter  Agreement  dated as of  November  6,  2000 by and  among
                Amerada Hess Corporation, Goldman Sachs International, LASMO plc
                and Paul Colbeck Murray.

         6.     Letter  Agreement  dated as of  November  6,  2000 by and  among
                Amerada Hess Corporation, Goldman Sachs International, LASMO plc
                and Roy Gregory Reynolds.

         7.     Letter  Agreement  dated as of  November  6,  2000 by and  among
                Amerada Hess Corporation, Goldman Sachs International, LASMO plc
                and Nigel Victor Turnball.

         8.     Letter  Agreement  dated as of  November  6,  2000 by and  among
                Amerada Hess Corporation, Goldman Sachs International, LASMO plc
                and Timothy Pienne Brennand.

         9.     Letter  Agreement  dated as of  November  6,  2000 by and  among
                Amerada Hess Corporation, Goldman Sachs International, LASMO plc
                and Hugh Edward Norton.

         10.    Letter  Agreement  dated as of  November  6,  2000 by and  among
                Amerada Hess Corporation, Goldman Sachs International, LASMO plc
                and Antony Peverell Hichens.

         11.    Inducement  Agreement  dated as of November 6, 2000 by and among
                Amerada Hess Corporation and LASMO plc.

         12.    Letter  Agreement  dated as of  November  6,  2000 by and  among
                Amerada  Hess  Corporation,   Goldman  Sachs  International  and
                Electrafina S.A.

         13.    Letter  Agreement  dated as of  November  6,  2000 by and  among
                Amerada  Hess  Corporation,   Goldman  Sachs  International  and
                Schroders Investment Management Limited.


                                    SIGNATURE


         After reasonable  inquiry and to the best of my knowledge and belief, I
certify that the information  set forth in this statement is true,  complete and
correct.

Dated:  November 15, 2000


                                         AMERADA HESS CORPORATION



                                         By:     /s/ J. Barclay Collins II
                                            ------------------------------------
                                            Name: J. Barclay Collins II
                                            Title:    Executive Vice President
                                                      and General Counsel

         The following table sets forth the name,  present principal  occupation
or employment and material  occupations,  positions,  offices or employments for
the past five years of each director and each executive  officer of Amerada Hess
Corporation.  The  principal  address of Amerada Hess  Corporation  and,  unless
indicated below,  the current business address for each individual  listed below
is 1185 Avenue of the Americas,  40th Floor,  New York, NY 10036 (212) 997-8500.
Each such person is, unless indicated above, a citizen of the United States. The
current executive officers are identified by an asterisk.

Name and Current Present Principal Occupation or Employment; Material Positions Business Address Held During the Past Five Years John B. Hess*...................................... Chairman of the Board, Chief Executive Officer of Amerada Hess Corporation since 1995; Director of Amerada Hess Corporation since 1978. W.S.H. Laidlaw*.................................... President, Chief Operating Officer of Amerada Hess Corporation since 1995; Director of Amerada Hess Corporation since 1994. J. Barclay Collins II*............................. Executive Vice President, General Counsel of Amerada Hess Corporation; Director of Amerada Hess Corporation since 1986. John Y. Schreyer*.................................. Executive Vice President, Chief Financial Officer of Amerada Hess Corporation; Director of Amerada Hess Corporation since 1990. Allan A. Bernstein*................................ Senior Vice President of Amerada Hess Corporation. F. Lamar Clark*.................................... Senior Vice President of Amerada Hess Corporation. John A. Gartman*................................... Senior Vice President of Amerada Hess Corporation since 1997; Vice President of Public Service Electric and Gas Company in the area of energy marketing. Neal Gelfand*...................................... Senior Vice President of Amerada Hess Corporation. Gerald A. Jamin*................................... Senior Vice President and Treasurer of Amerada Hess Corporation. Lawrence H. Ornstein*.............................. Senior Vice President of Amerada Hess Corporation. Roger B. Oresman................................... Consulting Partner, Milbank, Tweed, Hadley & McCloy LLP; Director since 1969. F. Borden Walker*1................................. Senior Vice President of Amerada Hess Corporation since 1996; General Manager in areas of gasoline marketing, convenience store development and advertising at Mobil Corporation. Peter S. Hadley.................................... Director of Amerada Hess Corporation since 1991; Former Senior Vice President of Metropolitan Life Insurance Company. William R. Johnson................................. Director of Amerada Hess Corporation since 1996; Chairman of H.J. Heinz Company since September 2000 and President and Chief Executive Officer of H.J. Heinz Company since 1998 after serving in various senior executive positions; Director of Cincinnati Financial Corporation; Director of PNC Bank. William I. Spencer................................. Director of Amerada Hess Corporation since 1982; Former President and Chief Administrative Officer of Citicorp and Citibank, N.A. Nicholas F. Brady.................................. Director of Amerada Hess Corporation since 1994; Chairman Darby Overseas Investments, Ltd.; Former Secretary of the United States Department of the Treasury; Former Chairman of the Board of Dillon, Read & Co., Inc.; Director of C2, Inc.; Director of H.J. Heinz Company; Director or Trustee of various Templeton mutual funds. Thomas H. Kean..................................... Director of Amerada Hess Corporation since 1990; President, Drew University; Former Governor of the State of New Jersey; Director of ARAMARK Corporation; Director of Bell Atlantic Corporation; Director of the CIT Group, Inc.; Director of United Healthcare Corporation. Frank A. Olson..................................... Director of Amerada Hess Corporation since 1998; Chief Executive Officer of the Hertz Corporation in 1998; Retired as Chief Executive Officer of the Hertz Corporation in 1999 and continues as non-executive Chairman of the Board; Director of Becton Dickinson and Company; Director of Fuel America Enterprises Holdings, Inc. Edith E. Holiday................................... Director of Amerada Hess Corporation since 1993; Attorney; Former Assistant to the President of the United States and Secretary of the Cabinet; Former General Counsel, United States Department of the Treasury; Director of Beverly Enterprises, Inc.; Director of Hercules, Incorporated; Director of H.J. Heinz Company; Director of RTI International Metals, Inc.; Director or trustee of various Franklin Templeton mutual funds. Robert N. Wilson................................... Director of Amerada Hess Corporation since 1996; Vice Chairman of the Board of Directors of Johnson & Johnson; Director of United States Trust Corporation. Robert F. Wright................................... Director of Amerada Hess Corporation since 1981; Former President and Chief Operating Officer of Amerada Hess Corporation.
1 Except for Messrs. Walker and Gartman, each of the above officers has been employed by Amerada Hess Corporation or its subsidiaries in various managerial and executive capacities for more than five years. EXHIBIT INDEX 1. Long Form Press Release, dated as of November 6, 2000. The Long Form Press Release was filed by Amerada Hess on Form 8-K on November 6, 2000 and is incorporated herein by reference. 2. Short Form Press Release, dated as of November 6, 2000. The Short Form Press Release was filed by Amerada Hess on Form 8-K on November 6, 2000 and is hereby incorporated by reference. 3. Letter Agreement dated as of November 6, 2000 by and among Amerada Hess Corporation, Goldman Sachs International, LASMO plc and Joseph Darby. 4. Letter Agreement dated as of November 6, 2000 by and among Amerada Hess Corporation, Goldman Sachs International, LASMO plc and Thierry Hughes Baudouin de Jean Baptiste de Rhoder. 5. Letter Agreement dated as of November 6, 2000 by and among Amerada Hess Corporation, Goldman Sachs International, LASMO plc and Paul Colbeck Murray. 6. Letter Agreement dated as of November 6, 2000 by and among Amerada Hess Corporation, Goldman Sachs International, LASMO plc and Roy Gregory Reynolds. 7. Letter Agreement dated as of November 6, 2000 by and among Amerada Hess Corporation, Goldman Sachs International, LASMO plc and Nigel Victor Turnball. 8. Letter Agreement dated as of November 6, 2000 by and among Amerada Hess Corporation, Goldman Sachs International, LASMO plc and Timothy Pienne Brennand. 9. Letter Agreement dated as of November 6, 2000 by and among Amerada Hess Corporation, Goldman Sachs International, LASMO and Hugh Edward Norton. 10. Letter Agreement dated as of November 6, 2000 by and among Amerada Hess Corporation, Goldman Sachs International, LASMO and Antony Peverell Hichens. 11. Inducement Agreement dated as of November 6, 2000 by and among Amerada Hess Corporation and LASMO plc. 12. Letter Agreement dated as of November 6, 2000 by and among Amerada Hess Corporation, Goldman Sachs International and Electrafina S.A. 13. Letter Agreement dated as of November 6, 2000 by and among Amerada Hess Corporation, Goldman Sachs International and Schroders Investment Management Limited.
                                                                       EXHIBIT 3
To:      Amerada Hess Corporation plc ("Amerada Hess")

and      Goldman Sachs International ("Goldman Sachs")


                                                                 6 November 2000


Dear Sirs,

I  understand  that  Amerada  Hess  intends to make an offer to acquire  all the
issued ordinary share capital of Linda plc ("Linda")  substantially on the terms
of the  attached  draft press  announcement.  This letter sets out the terms and
conditions  on which I will accept the Offer (as defined in  paragraph 7 of this
undertaking) when it is made.


Shareholdings
1.   I represent and warrant to Amerada Hess that:

(a)  I am the registered  holder and beneficial  owner of the number of ordinary
     shares of 25p each in the capital of Linda shown in Part A of the  Schedule
     (the  "Linda  Shares")  and that I hold  these  free of any  lien,  charge,
     option,  equity  or  encumbrance  and free from any  third  party  right or
     interest;

(b)  I am the  beneficial  owner  (but not  registered  holder) of the number of
     ordinary  shares of 25p each in the capital of Linda shown in Part B of the
     Schedule (the "Beneficial  Shares") and that I hold these free of any lien,
     charge,  option,  equity or encumbrance and free from any third party right
     or interest;

(c)  the  information  set out in the Schedule  regarding the shares of Linda in
     which I am interested is complete and accurate;

(d)  the  Schedule  contains  complete  and  accurate  details  of all  options,
     warrants  and  other  rights  I may  have to  subscribe  for,  purchase  or
     otherwise acquire any securities of Linda; and

(e)  I have full power and authority to enter into this undertaking,  to perform
     the  obligations  under it and to accept  the Offer in respect of the Linda
     shares.


Dealings
2. I  undertake  to  Amerada  Hess that  before the Offer  closes,  lapses or is
withdrawn, I shall not:

(a)  sell,  transfer,  charge,  encumber,  grant any  option  over or  otherwise
     dispose of any Linda Shares or any Beneficial Shares or any other shares or
     securities in Linda issued or  unconditionally  allotted to me or otherwise
     acquired by me before then ("Further  Linda Shares") other than pursuant to
     my acceptance of the Offer;

(b)  accept any other offer in respect of the shares or  securities  referred to
     in paragraph 2(a);

(c)  (other than pursuant to the Offer) enter into any agreement or  arrangement
     or permit any  agreement  or  arrangement  to be entered  into or incur any
     obligation or permit any obligation to arise:

           (i) to do any of the acts referred to in paragraphs 2(a) or 2(b);

          (ii) in relation to, or operating by reference  to, the Linda  Shares,
               the Beneficial Shares or any Further Linda Shares; or

         (iii) which, in relation to the Linda Shares,  the Beneficial Shares or
               any Further  Linda Shares,  would or might  restrict or impede me
               accepting the Offer,

     and for the avoidance of doubt,  references in this  paragraph  2(c) to any
     agreement, arrangement or obligation includes any agreement, arrangement or
     obligation  whether or not legally  binding or subject to any  condition or
     which  is to  take  effect  if  the  Offer  closes  or  lapses  or if  this
     undertaking ceases to be binding or following any other event; or

(d)  save for the  acquisition of any further shares in Linda on the exercise of
     options referred to in Part C of the Schedule,  I shall not purchase,  sell
     or  otherwise  deal in any shares or other  securities  of Linda or Amerada
     Hess or any interest therein (including any derivatives  referenced to such
     securities).


Undertaking to accept the Offer
3. In  consideration  of Amerada  Hess's  agreement in paragraph 9.1 to make the
Offer, I undertake to Amerada Hess that:

(a)  I shall accept the Offer in respect of the Linda Shares in accordance  with
     the procedure for acceptance set out in the formal document  containing the
     Offer (the "Offer Document") not later than seven days after  Amerada  Hess
     posts the Offer  Document  to Linda  shareholders  and  shall  perform  the
     agreement  to which that  acceptance  gives rise,  in  accordance  with the
     relevant provisions of the Offer Document;

(b)  I shall take all  action  within my power to  procure  that the  registered
     holder of the Beneficial  Securities  accepts the Offer in accordance  with
     the relevant provisions of the Offer Document and performs the agreement to
     which  that  acceptance   gives  rise,  in  accordance  with  the  relevant
     provisions of the Offer Document;

(c)  I shall  accept  the  Offer in  respect  of any  Further  Linda  Shares  in
     accordance  with the procedure for acceptance set out in the Offer Document
     not later than two days after the date I become  the  registered  holder of
     the Further  Linda  Shares and shall  perform the  agreement  to which that
     acceptance  gives rise,  in accordance  with the relevant  provisons of the
     Offer Document;

(d)  I shall take all  action  within my power to  procure  that the  registered
     holder  of any  further  ordinary  shares  in Linda in  which I  acquire  a
     beneficial  interest after the date of this  undertaking  but of which I do
     not become the registered holder ("Further  Beneficial Shares") accepts the
     offer and performs the  agreement  to which that  acceptance  gives rise in
     accordance with the relevant provisions of the Offer Document.

(e)  I shall not  withdraw  any  acceptances  of the  Offer and shall  cause the
     registered  holder(s) of any Beneficial  Shares and any Further  Beneficial
     Shares not to do so; and

(f)  pursuant to the Offer,  Amerada  Hess will  acquire the Linda  Shares,  the
     Beneficial  Shares and any Further  Linda  Shares from me free of any lien,
     charge,  option,  equity or encumbrance and together with all rights of any
     nature  attaching  to those  shares  including  the right to all  dividends
     declared or paid after the date of this undertaking.


Voting Rights
4.1 From the time Amerada Hess announces the Offer to the time the Offer becomes
wholly unconditional, lapses or is withdrawn:

(a)  I shall  exercise  the votes  attaching  to my Linda Shares and any Further
     Linda Shares on a Relevant Resolution (as defined in paragraph 4.3) only in
     accordance with Amerada Hess's directions;

(b)  I shall  exercise  the rights  attaching to my Linda Shares and any Further
     Linda Shares to requisition or join in requisitioning  any general or class
     meeting of Linda for the purposes of considering a Relevant  Resolution and
     to require Linda  pursuant to section 376 Companies Act 1985 to give notice
     of such a resolution only in accordance with Amerada Hess's directions;

(c)  I shall cause the  registered  holder(s) of any  Beneficial  Shares and any
     Further Beneficial Shares to comply with paragraphs 4.1(a) and 4.1(b).

4.2  For the  purpose  of  voting  or  causing  votes  to be cast on a  Relevant
Resolution,  I shall  execute  any  form  of  proxy  required  by  Amerada  Hess
appointing  any  person  nominated  by  Amerada  Hess to attend  and vote at the
relevant general meeting of Linda .

4.3 A "Relevant Resolution" means:

(a)  a  resolution  (whether  or not  amended)  proposed  at a general  or class
     meeting  of Linda,  or at an  adjourned  meeting,  the  passing of which is
     necessary to implement the Offer or which,  if passed,  might result in any
     condition  of the  Offer  not  being  fulfilled  or which  might  impede or
     frustrate the Offer in any way;

(b)  a resolution to adjourn a general or class meeting of Linda whose  business
     includes the consideration of a resolution falling within paragraph 4.3(a);
     and

(c)  a  resolution  to amend a resolution  falling  within  paragraph  4.3(a) or
     paragraph 4.3(b).


Documentation
5.1  I consent to:

(a)  the inclusion of references to me and this  undertaking  in Amerada  Hess's
     announcement of the Offer (the "Press  Announcement") as they appear in the
     attached draft of the Press Announcement;

(b)  particulars  of this  undertaking  and my  holdings  of, and  dealings  in,
     relevant  securities of Linda and Amerada Hess being  included in the Offer
     Document  and any other  related or  ancillary  document as required by the
     Code; and

(c)  this undertaking  being available for inspection until the end of the offer
     period (as defined in the Code).

5.2  I shall promptly  give you all  information  and any  assistance as you may
reasonably require for the preparation of the Offer Document and all related and
ancillary  documents in order to comply with the  requirements  of the Code, the
Financial  Services  Authority and the London Stock Exchange and any other legal
or regulatory  requirement or body. I shall immediately notify you in writing of
any  material  change in the  accuracy or impact of any  information  previously
given to you.


Secrecy
6. I will keep secret the possibility, terms and conditions of the Offer and the
existence and terms of this undertaking until the Press Announcement is released
provided  that I may disclose the same to Linda and its advisers in which case I
will use reasonable  endeavours to ensure that they observe  secrecy in the same
terms.  The  obligations  in this  paragraph  will survive  termination  of this
undertaking.


Interpretation

7. In this undertaking the "Offer" means the offer to be made by or on behalf of
Amerada Hess to acquire  ordinary  shares of 25p each in the capital of Linda on
substantially the terms of the Press  Announcement or on such other terms as may
be agreed  between  Amerada  Hess and Linda or as may be required to comply with
the  requirements  of the Panel on  Takeovers  and Mergers  (the  "Panel"),  the
Financial Services  Authority or the London Stock Exchange.  A reference in this
undertaking to the "Offer" also includes any new, increased,  renewed or revised
offer made by or on behalf of Amerada Hess to acquire shares in Linda,  provided
that the terms of such offer are,  in the  opinion  of  Goldman  Sachs,  no less
favourable to acceptors than the terms set out in the Press Announcement.


Time of the Essence
8. Any time,  date or period  mentioned in this  undertaking  may be extended by
mutual agreement but as regards any time, date or period  originally fixed or as
extended, time shall be of the essence.


The Offer
9.1 Subject to paragraph 9.2, Amerada Hess agrees to make the Offer if the Press
Announcement is published,  with Amerada Hess's prior approval, in substantially
the form attached (or in such other form as may be agreed  between  Amerada Hess
and LASMO or as may be required to comply with the  requirements of the Panel on
Takeovers and Mergers (the "Panel")) by not later than 8 November 2000. Approval
of  the  release  of  the  Press  Announcement  is at  Amerada  Hess's  absolute
discretion.

9.2 Amerada Hess will not be obliged to make or proceed with the Offer if, after
the Press Announcement is published:

(a)  the Panel consents to Amerada Hess not proceeding with the Offer; or

(b)  Amerada  Hess is no  longer  required  by the City  Code of  Takeovers  and
     Mergers (the "Code") to proceed with the Offer.

9.3  Amerada  Hess  shall  have no  liability  to me for any  failure to make or
implement the Offer and I will not be entitled to specific performance of Clause
9.1 if, in each case,  Amerada Hess has become  aware that any  condition of the
Offer  as set out in the  Press  Announcement  has  become  incapable  of  being
fulfilled.

9.4  My obligations under this agreement will lapse if:

(a)  the Press Announcement is not released on 8 November 2000; or

(b)  the Offer is not made in any of the circumstances  referred to in paragraph
     9.2,

and in these  circumstances  neither party will have any claim against the other
except in respect of any prior breach.

If the undertaking lapses, I shall have no claim against Amerada Hess.


Director's undertakings
10.1  As a director  of Linda, I shall use my best  endeavours  to procure  that
Linda and the board of directors of Linda:

(a)  provide all assistance which Amerada Hess reasonably  requests to enable it
     to prepare the Offer  Document and all related and  ancillary  documents in
     accordance  with the  requirements  of the  Code,  the SEC,  the  Financial
     Services  Authority  and the London  Stock  Exchange and any other legal or
     regulatory requirement or body;

(b)  provide all assistance  which Amerada Hess  reasonably  requests to Amerada
     Hess as may be required to obtain the clearances  and consents  referred to
     in the Press Announcement;

(c)  if the Offer becomes  unconditional  in all respects,  promptly approve the
     appointment  as  director(s)  of Linda of the persons  nominated by Amerada
     Hess and,  if  required by Amerada  Hess,  I shall  resign as a director of
     Linda ;

(d)  agree to any extension of time limits in the Code for posting of this Offer
     which Amerada Hess requests and which the Panel approves; and

(e)  not make (and that no-one makes on behalf of Linda):

          (i)  any announcement  before the Press Announcement is released which
               refers expressly or implicitly to Amerada Hess; or

          (ii) any other announcement in connection with the Offer without prior
               consultation with Amerada Hess,

     unless  Amerada Hess  consents in writing or the relevant  announcement  is
     required by law or any regulatory provision.

10.2  I shall:

(a)  not  directly or  indirectly  solicit any person other than Amerada Hess to
     propose or announce any offer for or any scheme of  arrangement  in respect
     of any shares or other securities of Linda; or

(b)  not directly or indirectly  initiate any  discussions  with, or provide any
     information  to,  any  person  who is or may be  considering  proposing  or
     announcing such an offer or scheme; or

(c)  recommend  acceptance  of the Offer to Linda  shareholders  and not modify,
     qualify or withdraw that  recommendation  at any time, except insofar as to
     do so would be inconsistent with my duties as a Director of LASMO.

10.3 I shall promptly inform you of any approach by a third party which may lead
to an offer for Linda or the occurrence of any matter referred to above and will
keep you  fully  informed  of the same  (but  not of the  value of the  relevant
proposal or the identity of its proponent).

10.4 I confirm  that I know of no matter or  circumstance  which might mean that
any  condition  of the  Offer  set  out  in the  Press  Announcement  cannot  be
fulfilled.  I will  have  no  liability  to  Amerada  Hess  in  respect  of this
confirmation.


Confirmation
11. I confirm that in signing  this letter I am not a customer of Goldman  Sachs
for the purposes of the Rules of The Securities  and Futures  Authority and that
Goldman Sachs does not owe me any of the duties which it owes to its  customers.
I confirm that I have had an adequate  opportunity to consider whether or not to
give this undertaking and to obtain independent advice.


Power of Attorney
12.1  In  order  to  secure  the  performance  of  my  obligations   under  this
undertaking, I appoint any director of Amerada Hess as my attorney:

(a)  if I fail to accept or to  procure  acceptance  of the Offer in  accordance
     with  paragraphs  3(a),  3(b)  or 3(c) or if I fail  to  accept  the  offer
     referred to in paragraph 3(d) in accordance with that paragraph, in my name
     and on my  behalf  to do all  things  and to  execute  all  deeds and other
     documents as may be necessary or desirable to accept such offers in respect
     of the Linda Shares,  the Beneficial  Shares,  any Further Linda Shares and
     the options referred to in paragraph 3(d) (as appropriate); and

(b)  to execute any form of proxy required by Amerada Hess appointing any person
     nominated by Amerada Hess to attend and vote on a Relevant  Resolution  (as
     defined in paragraph 4.3) at a general meeting of Linda.

12.2 I agree  that this power of  attorney  is given by way of  security  and is
irrevocable  in accordance  with section 4 Powers of Attorney Act 1971 until the
Offer closes, lapses or is withdrawn.


Specific Performance
13. I agree  that,  if I fail to  accept  the  Offer  in  accordance  with  this
undertaking  or breach any of my  obligations,  damages would not be an adequate
remedy and accordingly  Amerada Hess shall be entitled to the remedy of specific
performance.


14.      General
14.1 The obligations I have accepted under this agreement are without  prejudice
to any  rights  of  Amerada  Hess or  Goldman  Sachs at  common  law or  equity.
Invalidity  of any  provision  of this  agreement  will  not  affect  any  other
provision.

14.2 Any  failure  or delay by any  person in  exercising  any  right,  power or
privilege  under  this  agreement  will not  comprise  a waiver  and a single or
partial exercise will not restrict any further exercise.

14.3 This  agreement is governed by and is to be construed  in  accordance  with
English law and each of the parties submits to the exclusive jurisdiction of the
English courts for all purposes in connection with this agreement.








                                    SCHEDULE

                                 EXISTING SHARES

PART A - REGISTERED HOLDINGS OF LINDA ORDINARY SHARES

REGISTERED HOLDER                                             ORDINARY SHARES OF
                                                              25P EACH
(Print name of giver of
undertaking)
JOSEPH DARBY                                                  119,458

PART B - BENEFICIAL HOLDINGS OF LINDA ORDINARY SHARES

BENEFICIAL OWNER                                              ORDINARY SHARES OF
                                                              25P EACH
(Print name)

- -------------------------


PART C -  OPTIONS  AND OTHER  RIGHTS  TO  ACQUIRE  LINDA  SECURITIES  (INCLUDING
OPTIONS)

HOLDER                                                TYPE OF OPTION

(Print name)

- -----------------------                               1984 schemes

                                                      --------------------------
                                                      289,985

                                                      SAYE

                                                      --------------------------
                                                      10,884

                                                      Equity Plan

                                                      --------------------------
                                                      As per 20F filing





SIGNED and DELIVERED as a DEED by......................................


Yours faithfully,


Signature                  JOSEPH DARBY

Name.........................

in the presence of:

Signature of witness:      AO BRIEN

Name                       AO BRIEN

Address                    101 BISHOPSGATE
                           LONDON EC2M 3XH
                           SOLICITOR


                                                                       EXHIBIT 4
To:      Amerada Hess Corporation plc ("Amerada Hess")

and      Goldman Sachs International ("Goldman Sachs")


                                                                 6 November 2000


Dear Sirs,

I  understand  that  Amerada  Hess  intends to make an offer to acquire  all the
issued ordinary share capital of Linda plc ("Linda")  substantially on the terms
of the  attached  draft press  announcement.  This letter sets out the terms and
conditions  on which I will accept the Offer (as defined in  paragraph 7 of this
undertaking) when it is made.


Shareholdings

1.  I represent and warrant to Amerada Hess that:

(a)    I am the registered holder and beneficial owner of the number of ordinary
       shares  of 25p  each  in the  capital  of  Linda  shown  in Part A of the
       Schedule  (the  "Linda  Shares")  and that I hold these free of any lien,
       charge, option, equity or encumbrance and free from any third party right
       or interest;

(b)    I am the beneficial  owner (but not  registered  holder) of the number of
       ordinary  shares of 25p each in the  capital of Linda  shown in Part B of
       the Schedule (the "Beneficial  Shares") and that I hold these free of any
       lien, charge, option, equity or encumbrance and free from any third party
       right or interest;

(c)    the information set out in the Schedule  regarding the shares of Linda in
       which I am interested is complete and accurate;

(d)    the  Schedule  contains  complete  and  accurate  details of all options,
       warrants  and  other  rights I may have to  subscribe  for,  purchase  or
       otherwise acquire any securities of Linda; and

(e)    I have full  power and  authority  to enter  into  this  undertaking,  to
       perform  the  obligations  under it and to accept the Offer in respect of
       the Linda shares.


Dealings
2.  I  undertake to  Amerada  Hess that  before the Offer  closes,  lapses or is
withdrawn, I shall not:

(a)    sell,  transfer,  charge,  encumber,  grant any option over or  otherwise
       dispose of any Linda Shares or any Beneficial  Shares or any other shares
       or  securities  in Linda  issued  or  unconditionally  allotted  to me or
       otherwise  acquired by me before then ("Further Linda Shares") other than
       pursuant to my acceptance of the Offer;

(b)    accept any other offer in respect of the shares or securities referred to
       in paragraph 2(a);

(c)    (other  than   pursuant  to  the  Offer)  enter  into  any  agreement  or
       arrangement  or permit any agreement or arrangement to be entered into or
       incur any obligation or permit any obligation to arise:

              (i)    to do any of the acts  referred  to in  paragraphs  2(a) or
                     2(b);

              (ii)   in relation to, or  operating  by  reference  to, the Linda
                     Shares,  the Beneficial Shares or any Further Linda Shares;
                     or

              (iii)  which,  in relation  to the Linda  Shares,  the  Beneficial
                     Shares or any Further Linda Shares, would or might restrict
                     or impede me accepting the Offer,

       and for the avoidance of doubt,  references in this paragraph 2(c) to any
       agreement,  arrangement or obligation includes any agreement, arrangement
       or obligation  whether or not legally binding or subject to any condition
       or which is to take  effect  if the  Offer  closes  or  lapses or if this
       undertaking ceases to be binding or following any other event; or

(d)    save for the  acquisition  of any further shares in Linda on the exercise
       of options  referred to in Part C of the Schedule,  I shall not purchase,
       sell or  otherwise  deal in any  shares or other  securities  of Linda or
       Amerada  Hess  or  any  interest   therein   (including  any  derivatives
       referenced to such securities).


Undertaking to accept the Offer
3.  In  consideration  of Amerada  Hess's agreement in paragraph 9.1 to make the
Offer, I undertake to Amerada Hess that:

(a)    I shall  accept the Offer in respect  of the Linda  Shares in  accordance
       with  the  procedure  for  acceptance  set  out  in the  formal  document
       containing  the Offer (the  "Offer  Document")  not later than seven days
       after  Amerada Hess posts the Offer  Document to Linda  shareholders  and
       shall  perform the  agreement  to which that  acceptance  gives rise,  in
       accordance with the relevant provisions of the Offer Document;

(b)    I shall take all action  within my power to procure  that the  registered
       holder of the Beneficial  Securities accepts the Offer in accordance with
       the relevant  provisions of the Offer Document and performs the agreement
       to which that  acceptance  gives rise,  in  accordance  with the relevant
       provisions of the Offer Document;

(c)    I shall  accept  the Offer in  respect  of any  Further  Linda  Shares in
       accordance  with  the  procedure  for  acceptance  set  out in the  Offer
       Document  not later than two days after the date I become the  registered
       holder of the Further  Linda  Shares and shall  perform the  agreement to
       which  that  acceptance  gives  rise,  in  accordance  with the  relevant
       provisions of the Offer Document;

(d)    I shall take all action  within my power to procure  that the  registered
       holder  of any  further  ordinary  shares  in Linda in which I  acquire a
       beneficial  interest after the date of this undertaking but of which I do
       not become the registered  holder ("Further  Beneficial  Shares") accepts
       the offer and performs the agreement to which that acceptance  gives rise
       in accordance with the relevant provisions of the Offer Document.

(e)    I shall not  withdraw  any  acceptances  of the Offer and shall cause the
       registered  holder(s) of any Beneficial Shares and any Further Beneficial
       Shares not to do so; and

(f)    pursuant to the Offer,  Amerada Hess will acquire the Linda  Shares,  the
       Beneficial  Shares and any Further Linda Shares from me free of any lien,
       charge, option, equity or encumbrance and together with all rights of any
       nature  attaching to those shares  including  the right to all  dividends
       declared or paid after the date of this undertaking.


Voting Rights
4.1 From the time Amerada Hess announces the Offer to the time the Offer becomes
wholly unconditional, lapses or is withdrawn:

(a)    I shall  exercise the votes  attaching to my Linda Shares and any Further
       Linda Shares on a Relevant  Resolution (as defined in paragraph 4.3) only
       in accordance with Amerada Hess's directions;

(b)    I shall exercise the rights  attaching to my Linda Shares and any Further
       Linda  Shares to  requisition  or join in  requisitioning  any general or
       class  meeting  of Linda  for the  purposes  of  considering  a  Relevant
       Resolution  and to require  Linda  pursuant to section 376  Companies Act
       1985 to give notice of such a resolution  only in accordance with Amerada
       Hess's directions;

(c)    I shall cause the registered  holder(s) of any Beneficial  Shares and any
       Further Beneficial Shares to comply with paragraphs 4.1(a) and 4.1(b).

4.2  For the  purpose  of  voting  or  causing  votes  to be cast on a  Relevant
Resolution,  I shall  execute  any  form  of  proxy  required  by  Amerada  Hess
appointing  any  person  nominated  by  Amerada  Hess to attend  and vote at the
relevant general meeting of Linda .

4.3  A "Relevant Resolution" means:

(a)    a  resolution  (whether  or not  amended)  proposed at a general or class
       meeting of Linda,  or at an  adjourned  meeting,  the passing of which is
       necessary to implement the Offer or which, if passed, might result in any
       condition  of the Offer  not being  fulfilled  or which  might  impede or
       frustrate the Offer in any way;

(b)    a  resolution  to  adjourn  a general  or class  meeting  of Linda  whose
       business  includes  the  consideration  of a  resolution  falling  within
       paragraph 4.3(a); and

(c)    a resolution to amend a resolution  falling  within  paragraph  4.3(a) or
       paragraph 4.3(b).


Documentation
5.1  I consent to:

(a)    the inclusion of references to me and this  undertaking in Amerada Hess's
       announcement  of the Offer (the "Press  Announcement")  as they appear in
       the attached draft of the Press Announcement;

(b)    particulars  of this  undertaking  and my holdings  of, and  dealings in,
       relevant securities of Linda and Amerada Hess being included in the Offer
       Document and any other  related or ancillary  document as required by the
       Code; and

(c)    this  undertaking  being  available for  inspection  until the end of the
       offer period (as defined in the Code).

5.2  I shall promptly  give you all  information  and any  assistance as you may
reasonably require for the preparation of the Offer Document and all related and
ancillary  documents in order to comply with the  requirements  of the Code, the
Financial  Services  Authority and the London Stock Exchange and any other legal
or regulatory  requirement or body. I shall immediately notify you in writing of
any  material  change in the  accuracy or impact of any  information  previously
given to you.


Secrecy
6. I will keep secret the possibility, terms and conditions of the Offer and the
existence and terms of this undertaking until the Press Announcement is released
provided  that I may disclose the same to Linda and its advisers in which case I
will use reasonable  endeavours to ensure that they observe  secrecy in the same
terms.  The  obligations  in this  paragraph  will survive  termination  of this
undertaking.


Interpretation
7. In this undertaking the "Offer" means the offer to be made by or on behalf of
Amerada Hess to acquire  ordinary  shares of 25p each in the capital of Linda on
substantially the terms of the Press  Announcement or on such other terms as may
be agreed  between  Amerada  Hess and Linda or as may be required to comply with
the  requirements  of the Panel on  Takeovers  and Mergers  (the  "Panel"),  the
Financial Services  Authority or the London Stock Exchange.  A reference in this
undertaking to the "Offer" also includes any new, increased,  renewed or revised
offer made by or on behalf of Amerada Hess to acquire shares in Linda,  provided
that the terms of such offer are,  in the  opinion  of  Goldman  Sachs,  no less
favourable to acceptors than the terms set out in the Press Announcement.


Time of the Essence
8. Any time,  date or period  mentioned in this  undertaking  may be extended by
mutual agreement but as regards any time, date or period  originally fixed or as
extended, time shall be of the essence.


The Offer
9.1 Subject to paragraph 9.2, Amerada Hess agrees to make the Offer if the Press
Announcement is published,  with Amerada Hess's prior approval, in substantially
the form attached (or in such other form as may be agreed  between  Amerada Hess
and LASMO or as may be required to comply with the  requirements of the Panel on
Takeovers and Mergers (the "Panel")) by not later than 8 November 2000. Approval
of  the  release  of  the  Press  Announcement  is at  Amerada  Hess's  absolute
discretion.

9.2 Amerada Hess will not be obliged to make or proceed with the Offer if, after
the Press Announcement is published:

(a)    the Panel consents to Amerada Hess not proceeding with the Offer; or

(b)    Amerada  Hess is no longer  required  by the City Code of  Takeovers  and
       Mergers (the "Code") to proceed with the Offer.

9.3  Amerada  Hess  shall  have no  liability  to me for any  failure to make or
implement the Offer and I will not be entitled to specific performance of Clause
9.1 if, in each case,  Amerada Hess has become  aware that any  condition of the
Offer  as set out in the  Press  Announcement  has  become  incapable  of  being
fulfilled.

9.4  My obligations under this agreement will lapse if:

(a)    the Press Announcement is not released on 8 November 2000; or

(b)    the Offer is not made or Amerada  Hess does not proceed with the offer in
       any of the circumstances referred to in paragraph 9.2,

and in these  circumstances  neither party will have any claim against the other
except in respect of any prior breach.

If the undertaking lapses, I shall have no claim against Amerada Hess.


Director's undertakings
10.1  As a director  of Linda,  I shall use my best endeavours  to procure  that
Linda and the board of directors of Linda:

(a)    provide all assistance  which Amerada Hess reasonably  requests to enable
       it to prepare the Offer Document and all related and ancillary  documents
       in accordance  with the  requirements of the Code, the SEC, the Financial
       Services  Authority and the London Stock  Exchange and any other legal or
       regulatory requirement or body;

(b)    provide all assistance which Amerada Hess reasonably  requests to Amerada
       Hess as may be required to obtain the clearances and consents referred to
       in the Press Announcement;

(c)    if the Offer becomes unconditional in all respects,  promptly approve the
       appointment as  director(s) of Linda of the persons  nominated by Amerada
       Hess and, if required by Amerada  Hess,  I shall  resign as a director of
       Linda ;

(d)    agree to any  extension  of time  limits in the Code for  posting of this
       Offer which Amerada Hess requests and which the Panel approves; and

(e)    not make (and that no-one makes on behalf of Linda):

              (i)    any announcement  before the Press Announcement is released
                     which refers expressly or implicitly to Amerada Hess; or

              (ii)   any other announcement in connection with the Offer without
                     prior consultation with Amerada Hess,

         unless Amerada Hess consents in writing or the relevant announcement is
         required by law or any regulatory provision.

10.2  I shall:

(a)    not directly or indirectly  solicit any person other than Amerada Hess to
       propose or announce any offer for or any scheme of arrangement in respect
       of any shares or other securities of Linda; or

(b)    not directly or indirectly  initiate any discussions with, or provide any
       information  to,  any person who is or may be  considering  proposing  or
       announcing such an offer or scheme; or

(c)    recommend  acceptance of the Offer to Linda  shareholders and not modify,
       qualify or withdraw that recommendation at any time, except insofar as to
       do so would be inconsistent with my duties as a Director of LASMO.

10.3 I shall promptly inform you of any approach by a third party which may lead
to an offer for Linda or the occurrence of any matter referred to above and will
keep you  fully  informed  of the same  (but  not of the  value of the  relevant
proposal or the identity of its proponent).

10.4 I confirm  that I know of no matter or  circumstance  which might mean that
any  condition  of the  Offer  set  out  in the  Press  Announcement  cannot  be
fulfilled.  I will  have  no  liability  to  Amerada  Hess  in  respect  of this
confirmation.


Confirmation
11. I confirm that in signing  this letter I am not a customer of Goldman  Sachs
for the purposes of the Rules of The Securities  and Futures  Authority and that
Goldman Sachs does not owe me any of the duties which it owes to its  customers.
I confirm that I have had an adequate  opportunity to consider whether or not to
give this undertaking and to obtain independent advice.


Power of Attorney
12.1  In  order  to  secure  the  performance  of  my  obligations   under  this
undertaking, I appoint any director of Amerada Hess as my attorney:

(a)    if I fail to accept or to procure  acceptance  of the Offer in accordance
       with  paragraphs  3(a),  3(b) or 3(c) or if I fail to  accept  the  offer
       referred to in paragraph 3(d) in accordance  with that  paragraph,  in my
       name and on my behalf to do all things and to execute all deeds and other
       documents  as may be  necessary  or  desirable  to accept  such offers in
       respect of the Linda Shares,  the  Beneficial  Shares,  any Further Linda
       Shares and the options  referred to in paragraph  3(d) (as  appropriate);
       and

(b)    to execute any form of proxy  required  by Amerada  Hess  appointing  any
       person  nominated  by  Amerada  Hess to  attend  and  vote on a  Relevant
       Resolution (as defined in paragraph 4.3) at a general meeting of Linda.

12.2 I agree  that this power of  attorney  is given by way of  security  and is
irrevocable  in accordance  with section 4 Powers of Attorney Act 1971 until the
Offer closes, lapses or is withdrawn.


Specific Performance
13. I agree  that,  if I fail to  accept  the  Offer  in  accordance  with  this
undertaking  or breach any of my  obligations,  damages would not be an adequate
remedy and accordingly  Amerada Hess shall be entitled to the remedy of specific
performance.


14.      General
14.1 The obligations I have accepted under this agreement are without  prejudice
to any  rights  of  Amerada  Hess or  Goldman  Sachs at  common  law or  equity.
Invalidity  of any  provision  of this  agreement  will  not  affect  any  other
provision.

14.2 Any  failure  or delay by any  person in  exercising  any  right,  power or
privilege  under  this  agreement  will not  comprise  a waiver  and a single or
partial exercise will not restrict any further exercise.

14.3 This  agreement is governed by and is to be construed  in  accordance  with
English law and each of the parties submits to the exclusive jurisdiction of the
English courts for all purposes in connection with this agreement.






                                    SCHEDULE

                                 EXISTING SHARES

PART A - REGISTERED HOLDINGS OF LINDA ORDINARY SHARES

REGISTERED HOLDER                                             ORDINARY SHARES OF
                                                              25P EACH
(Print name of giver of
undertaking)

THIERRY HUGHES BAUDOUIN

JEAN BAPTISTE DE RUDDER






SIGNED and DELIVERED as a DEED by                       THIERRY HUGHES BAUDOMIAS
                                                        JEAN BAPTISTE DE RHODER


Yours faithfully,


Signature                                            THIERRY HUGHES BAUDOMIAS

Name                                                 THIERRY HUGHES BAUDOMIAS

in the presence of:

Signature of witness:      MICHELE DE RUDDER

Name                       MICHELE DE RUDDER

Address                    6 AVENUE DE BECASSES
                           1640 RHODE ST. GENESE
                           BELGIUM


                                                                       EXHIBIT 5
To:      Amerada Hess Corporation plc ("Amerada Hess")

and      Goldman Sachs International ("Goldman Sachs")


                                                               6 November 2000


Dear Sirs,

I  understand  that  Amerada  Hess  intends to make an offer to acquire  all the
issued ordinary share capital of Linda plc ("Linda")  substantially on the terms
of the  attached  draft press  announcement.  This letter sets out the terms and
conditions  on which I will accept the Offer (as defined in  paragraph 7 of this
undertaking) when it is made.


Shareholdings
1.        I represent and warrant to Amerada Hess that:

(a)       I am the  registered  holder  and  beneficial  owner of the  number of
          ordinary shares of 25p each in the capital of Linda shown in Part A of
          the  Schedule  (the "Linda  Shares") and that I hold these free of any
          lien,  charge,  option,  equity or encumbrance and free from any third
          party right or interest;

(b)       I am the beneficial owner (but not registered holder) of the number of
          ordinary shares of 25p each in the capital of Linda shown in Part B of
          the Schedule (the  "Beneficial  Shares") and that I hold these free of
          any lien,  charge,  option,  equity or  encumbrance  and free from any
          third party right or interest;

(c)       the information set out in the Schedule  regarding the shares of Linda
          in which I am interested is complete and accurate;

(d)       the Schedule  contains  complete and accurate  details of all options,
          warrants  and other rights I may have to  subscribe  for,  purchase or
          otherwise acquire any securities of Linda; and

(e)       I have full power and  authority  to enter into this  undertaking,  to
          perform the obligations under it and to accept the Offer in respect of
          the Linda shares.


Dealings
2.       I undertake to Amerada Hess that before the Offer closes, lapses  or is
withdrawn, I shall not:

(a)      sell, transfer,  charge,  encumber,  grant any option over or otherwise
         dispose  of any  Linda  Shares  or any  Beneficial  Shares or any other
         shares or securities in Linda issued or unconditionally  allotted to me
         or otherwise  acquired by me before then ("Further Linda Shares") other
         than pursuant to my acceptance of the Offer;

(b)       accept any other offer in respect of the shares or securities referred
          to in paragraph 2(a);

(c)       (other  than  pursuant  to the  Offer)  enter  into any  agreement  or
          arrangement  or permit any agreement or arrangement to be entered into
          or incur any obligation or permit any obligation to arise:

          (i)       to do any of the  acts  referred  to in  paragraphs  2(a) or
                    2(b);

          (ii)      in relation  to, or  operating  by  reference  to, the Linda
                    Shares,  the Beneficial  Shares or any Further Linda Shares;
                    or

          (iii)     which,  in  relation  to the Linda  Shares,  the  Beneficial
                    Shares or any Further Linda Shares,  would or might restrict
                    or impede me accepting the Offer,

          and for the avoidance of doubt,  references in this  paragraph 2(c) to
          any  agreement,  arrangement  or  obligation  includes any  agreement,
          arrangement or obligation whether or not legally binding or subject to
          any condition or which is to take effect if the Offer closes or lapses
          or if this  undertaking  ceases to be binding or  following  any other
          event; or

(d)       save  for the  acquisition  of any  further  shares  in  Linda  on the
          exercise of options referred to in Part C of the Schedule, I shall not
          purchase,  sell or otherwise deal in any shares or other securities of
          Linda  or  Amerada  Hess  or  any  interest  therein   (including  any
          derivatives referenced to such securities).


Undertaking to accept the Offer
3.       In  consideration  of Amerada Hess's agreement in paragraph 9.1 to make
the Offer, I undertake to Amerada Hess that:

(a)       I shall accept the Offer in respect of the Linda Shares in  accordance
          with the  procedure  for  acceptance  set out in the  formal  document
          containing the Offer (the "Offer  Document") not later than seven days
          after Amerada Hess posts the Offer Document to Linda  shareholders and
          shall  perform the agreement to which that  acceptance  gives rise, in
          accordance with the relevant provisions of the Offer Document;

(b)       I shall take all action within my power to procure that the registered
          holder of the  Beneficial  Securities  accepts the Offer in accordance
          with the relevant  provisions  of the Offer  Document and performs the
          agreement to which that acceptance  gives rise, in accordance with the
          relevant provisions of the Offer Document;

(c)       I shall  accept the Offer in respect of any  Further  Linda  Shares in
          accordance  with the  procedure  for  acceptance  set out in the Offer
          Document  not  later  than  two  days  after  the  date I  become  the
          registered  holder of the Further  Linda Shares and shall  perform the
          agreement to which that acceptance  gives rise, in accordance with the
          relevant provisons of the Offer Document;

(d)       I shall take all action within my power to procure that the registered
          holder of any  further  ordinary  shares in Linda in which I acquire a
          beneficial  interest after the date of this undertaking but of which I
          do not become the  registered  holder  ("Further  Beneficial  Shares")
          accepts the offer and performs the agreement to which that  acceptance
          gives rise in  accordance  with the relevant  provisions  of the Offer
          Document.

(e)       I shall not withdraw any  acceptances of the Offer and shall cause the
          registered   holder(s)  of  any  Beneficial  Shares  and  any  Further
          Beneficial Shares not to do so; and

(f)       pursuant to the Offer, Amerada Hess will acquire the Linda Shares, the
          Beneficial  Shares and any  Further  Linda  Shares from me free of any
          lien,  charge,  option,  equity or  encumbrance  and together with all
          rights of any nature  attaching to those shares including the right to
          all dividends declared or paid after the date of this undertaking.


Voting Rights
4.1 From the time Amerada Hess announces the Offer to the time the Offer becomes
wholly unconditional, lapses or is withdrawn:

(a)       I shall  exercise  the  votes  attaching  to my Linda  Shares  and any
          Further Linda Shares on a Relevant Resolution (as defined in paragraph
          4.3) only in accordance with Amerada Hess's directions;

(b)       I shall  exercise  the  rights  attaching  to my Linda  Shares and any
          Further  Linda Shares to  requisition  or join in  requisitioning  any
          general or class  meeting of Linda for the purposes of  considering  a
          Relevant  Resolution  and to require  Linda  pursuant  to section  376
          Companies  Act  1985  to give  notice  of  such a  resolution  only in
          accordance with Amerada Hess's directions;

(c)       I shall cause the registered  holder(s) of any  Beneficial  Shares and
          any Further  Beneficial  Shares to comply with  paragraphs  4.1(a) and
          4.1(b).

4.2  For the  purpose  of  voting  or  causing  votes  to be cast on a  Relevant
Resolution,  I shall  execute  any  form  of  proxy  required  by  Amerada  Hess
appointing  any  person  nominated  by  Amerada  Hess to attend  and vote at the
relevant general meeting of Linda .

4.3      A "Relevant Resolution" means:

(a)       a resolution  (whether or not amended)  proposed at a general or class
          meeting of Linda, or at an adjourned meeting,  the passing of which is
          necessary to implement the Offer or which, if passed,  might result in
          any  condition of the Offer not being  fulfilled or which might impede
          or frustrate the Offer in any way;

(b)       a  resolution  to  adjourn a general or class  meeting of Linda  whose
          business  includes the  consideration  of a resolution  falling within
          paragraph 4.3(a); and

(c)       a resolution to amend a resolution  falling within paragraph 4.3(a) or
          paragraph 4.3(b).


Documentation
5.1      I consent to:

(a)       the  inclusion of  references  to me and this  undertaking  in Amerada
          Hess's  announcement of the Offer (the "Press  Announcement")  as they
          appear in the attached draft of the Press Announcement;

(b)       particulars of this  undertaking  and my holdings of, and dealings in,
          relevant  securities  of Linda and Amerada Hess being  included in the
          Offer Document and any other related or ancillary document as required
          by the Code; and

(c)       this  undertaking  being available for inspection until the end of the
          offer period (as defined in the Code).

5.2 I shall  promptly  give you all  information  and any  assistance as you may
reasonably require for the preparation of the Offer Document and all related and
ancillary  documents in order to comply with the  requirements  of the Code, the
Financial  Services  Authority and the London Stock Exchange and any other legal
or regulatory  requirement or body. I shall immediately notify you in writing of
any  material  change in the  accuracy or impact of any  information  previously
given to you.


Secrecy
6. I will keep secret the possibility, terms and conditions of the Offer and the
existence and terms of this undertaking until the Press Announcement is released
provided  that I may disclose the same to Linda and its advisers in which case I
will use reasonable  endeavours to ensure that they observe  secrecy in the same
terms.  The  obligations  in this  paragraph  will survive  termination  of this
undertaking.


Interpretation
7. In this undertaking the "Offer" means the offer to be made by or on behalf of
Amerada Hess to acquire  ordinary  shares of 25p each in the capital of Linda on
substantially the terms of the Press  Announcement or on such other terms as may
be agreed  between  Amerada  Hess and Linda or as may be required to comply with
the  requirements  of the Panel on  Takeovers  and Mergers  (the  "Panel"),  the
Financial Services  Authority or the London Stock Exchange.  A reference in this
undertaking to the "Offer" also includes any new, increased,  renewed or revised
offer made by or on behalf of Amerada Hess to acquire shares in Linda,  provided
that the terms of such offer are,  in the  opinion  of  Goldman  Sachs,  no less
favourable to acceptors than the terms set out in the Press Announcement.


Time of the Essence
8. Any time,  date or period  mentioned in this  undertaking  may be extended by
mutual agreement but as regards any time, date or period  originally fixed or as
extended, time shall be of the essence.


The Offer
9.1 Subject to paragraph 9.2, Amerada Hess agrees to make the Offer if the Press
Announcement is published,  with Amerada Hess's prior approval, in substantially
the form attached (or in such other form as may be agreed  between  Amerada Hess
and LASMO or as may be required to comply with the  requirements of the Panel on
Takeovers and Mergers (the "Panel")) by not later than 8 November 2000. Approval
of  the  release  of  the  Press  Announcement  is at  Amerada  Hess's  absolute
discretion.

9.2 Amerada Hess will not be obliged to make or proceed with the Offer if, after
the Press Announcement is published:

(a)       the Panel consents to Amerada Hess not proceeding with the Offer; or

(b)       Amerada Hess is no longer  required by the City Code of Takeovers  and
          Mergers (the "Code") to proceed with the Offer.

9.3  Amerada  Hess  shall  have no  liability  to me for any  failure to make or
implement the Offer and I will not be entitled to specific performance of Clause
9.1 if, in each case,  Amerada Hess has become  aware that any  condition of the
Offer  as set out in the  Press  Announcement  has  become  incapable  of  being
fulfilled.

9.4  My obligations under this agreement will lapse if:

(a)       the Press Announcement is not released on 8 November 2000; or

(b)       the  Offer  is not  made in any of the  circumstances  referred  to in
          paragraph 9.2,

and in these  circumstances  neither party will have any claim against the other
except in respect of any prior breach.

If the undertaking lapses, I shall have no claim against Amerada Hess.


Director's undertakings
10.1 As a director  of Linda,  I shall use my best  endeavours  to procure  that
Linda and the board of directors of Linda:

(a)       provide all  assistance  which  Amerada  Hess  reasonably  requests to
          enable it to prepare the Offer  Document and all related and ancillary
          documents in accordance  with the  requirements  of the Code, the SEC,
          the Financial Services Authority and the London Stock Exchange and any
          other legal or regulatory requirement or body;

(b)       provide all  assistance  which  Amerada  Hess  reasonably  requests to
          Amerada Hess as may be required to obtain the  clearances and consents
          referred to in the Press Announcement;

(c)       if the Offer becomes  unconditional in all respects,  promptly approve
          the  appointment as  director(s) of Linda of the persons  nominated by
          Amerada  Hess and, if required by Amerada  Hess,  I shall  resign as a
          director of Linda ;

(d)       agree to any  extension of time limits in the Code for posting of this
          Offer which Amerada Hess requests and which the Panel approves; and

(e)       not make (and that no-one makes on behalf of Linda):

          (i)       any announcement  before the Press  Announcement is released
                    which refers expressly or implicitly to Amerada Hess; or

          (ii)      any other  announcement in connection with the Offer without
                    prior consultation with Amerada Hess,

         unless Amerada Hess consents in writing or the relevant announcement is
         required by law or any regulatory provision.

10.2     I shall:

(a)       not directly or indirectly  solicit any person other than Amerada Hess
          to propose or announce any offer for or any scheme of  arrangement  in
          respect of any shares or other securities of Linda; or

(b)       not directly or indirectly  initiate any discussions  with, or provide
          any information to, any person who is or may be considering  proposing
          or announcing such an offer or scheme; or

(c)       recommend  acceptance  of the  Offer  to  Linda  shareholders  and not
          modify,  qualify or withdraw that  recommendation  at any time, except
          insofar as to do so would be inconsistent with my duties as a Director
          of LASMO.

10.3 I shall promptly inform you of any approach by a third party which may lead
to an offer for Linda or the occurrence of any matter referred to above and will
keep you  fully  informed  of the same  (but  not of the  value of the  relevant
proposal or the identity of its proponent).

10.4 I confirm  that I know of no matter or  circumstance  which might mean that
any  condition  of the  Offer  set  out  in the  Press  Announcement  cannot  be
fulfilled.  I will  have  no  liability  to  Amerada  Hess  in  respect  of this
confirmation.


Confirmation
11. I confirm that in signing  this letter I am not a customer of Goldman  Sachs
for the purposes of the Rules of The Securities  and Futures  Authority and that
Goldman Sachs does not owe me any of the duties which it owes to its  customers.
I confirm that I have had an adequate  opportunity to consider whether or not to
give this undertaking and to obtain independent advice.


Power of Attorney
12.1  In  order  to  secure  the  performance  of  my  obligations   under  this
undertaking, I appoint any director of Amerada Hess as my attorney:

(a)       if I  fail  to  accept  or to  procure  acceptance  of  the  Offer  in
          accordance with  paragraphs  3(a), 3(b) or 3(c) or if I fail to accept
          the  offer  referred  to in  paragraph  3(d) in  accordance  with that
          paragraph, in my name and on my behalf to do all things and to execute
          all deeds and other  documents  as may be  necessary  or  desirable to
          accept  such  offers in respect of the Linda  Shares,  the  Beneficial
          Shares,  any  Further  Linda  Shares and the  options  referred  to in
          paragraph 3(d) (as appropriate); and

(b)       to execute any form of proxy  required by Amerada Hess  appointing any
          person  nominated  by  Amerada  Hess to attend  and vote on a Relevant
          Resolution  (as  defined  in  paragraph  4.3) at a general  meeting of
          Linda.

12.2 I agree  that this power of  attorney  is given by way of  security  and is
irrevocable  in accordance  with section 4 Powers of Attorney Act 1971 until the
Offer closes, lapses or is withdrawn.


Specific Performance
13. I agree  that,  if I fail to  accept  the  Offer  in  accordance  with  this
undertaking  or breach any of my  obligations,  damages would not be an adequate
remedy and accordingly  Amerada Hess shall be entitled to the remedy of specific
performance.


14.  General
14.1 The obligations I have accepted under this agreement are without  prejudice
to any  rights  of  Amerada  Hess or  Goldman  Sachs at  common  law or  equity.
Invalidity  of any  provision  of this  agreement  will  not  affect  any  other
provision.

14.2 Any  failure  or delay by any  person in  exercising  any  right,  power or
privilege  under  this  agreement  will not  comprise  a waiver  and a single or
partial exercise will not restrict any further exercise.

14.3 This  agreement is governed by and is to be construed  in  accordance  with
English law and each of the parties submits to the exclusive jurisdiction of the
English courts for all purposes in connection with this agreement.




                                    SCHEDULE

                                 EXISTING SHARES

PART A - REGISTERED HOLDINGS OF LINDA ORDINARY SHARES

REGISTERED HOLDER                                         ORDINARY SHARES OF
                                                          25P EACH
(Print name of giver of
undertaking)

PAUL COLBECK MURRAY                                       9,869

                                                          55,399

PART B - BENEFICIAL HOLDINGS OF LINDA ORDINARY SHARES

BENEFICIAL OWNER                                          ORDINARY SHARES OF
                                                          25P EACH
(Print name)


- -------------------------


PART C -  OPTIONS  AND OTHER  RIGHTS  TO  ACQUIRE  LINDA  SECURITIES  (INCLUDING
OPTIONS)

HOLDER                                           TYPE OF OPTION

(Print name)

- -----------------------                          1984

                                                 -------------------------------
                                                 122,079

                                                 SAYE

                                                 -------------------------------
                                                 18,960

                                                 Equity Plan

                                                 -------------------------------
                                                 As per 20F SEC





SIGNED and DELIVERED as a DEED by                    PAUL COLBECK MURRAY


Yours faithfully,


Signature         PAUL COLBECK MURRAY

Name              PAUL COLBECK MURRAY

in the presence of:

Signature of witness:      AO BRIEN

Name                       AO BRIEN

Address                    101 Bishopsgate
                           London  EC2M 3XH
                           Solicitor


                                                                       EXHIBIT 6
To:      Amerada Hess Corporation plc ("Amerada Hess")

and      Goldman Sachs International ("Goldman Sachs")


                                                                 6 November 2000


Dear Sirs,

I  understand  that  Amerada  Hess  intends to make an offer to acquire  all the
issued ordinary share capital of Linda plc ("Linda")  substantially on the terms
of the  attached  draft press  announcement.  This letter sets out the terms and
conditions  on which I will accept the Offer (as defined in  paragraph 7 of this
undertaking) when it is made.


Shareholdings
1.       I represent and warrant to Amerada Hess that:

(a)      I am the  registered  holder  and  beneficial  owner of the  number  of
         ordinary  shares of 25p each in the capital of Linda shown in Part A of
         the  Schedule  (the "Linda  Shares")  and that I hold these free of any
         lien,  charge,  option,  equity or encumbrance  and free from any third
         party right or interest;

(b)      I am the beneficial owner (but not registered  holder) of the number of
         ordinary  shares of 25p each in the capital of Linda shown in Part B of
         the Schedule  (the  "Beneficial  Shares") and that I hold these free of
         any lien, charge, option, equity or encumbrance and free from any third
         party right or interest;

(c)      the information  set out in the Schedule  regarding the shares of Linda
         in which I am interested is complete and accurate;

(d)      the Schedule  contains  complete  and accurate  details of all options,
         warrants  and other  rights I may have to  subscribe  for,  purchase or
         otherwise acquire any securities of Linda; and

(e)      I have full  power and  authority  to enter into this  undertaking,  to
         perform the obligations  under it and to accept the Offer in respect of
         the Linda shares.


Dealings
2.       I undertake to Amerada Hess that before the Offer closes,  lapses or is
         withdrawn, I shall not:

(a)      sell, transfer,  charge,  encumber,  grant any option over or otherwise
         dispose  of any  Linda  Shares  or any  Beneficial  Shares or any other
         shares or securities in Linda issued or unconditionally  allotted to me
         or otherwise  acquired by me before then ("Further Linda Shares") other
         than pursuant to my acceptance of the Offer;

(b)      accept any other offer in respect of the shares or securities  referred
         to in paragraph 2(a);

(c)      (other  than  pursuant  to the  Offer)  enter  into  any  agreement  or
         arrangement  or permit any agreement or  arrangement to be entered into
         or incur any obligation or permit any obligation to arise:

             (i)  to do any of the acts referred to in paragraphs 2(a) or 2(b);

            (ii)  in  relation  to, or  operating  by  reference  to,  the Linda
                  Shares, the Beneficial Shares or any Further Linda Shares; or

           (iii)  which, in relation to the Linda Shares,  the Beneficial Shares
                  or any Further Linda Shares, would or might restrict or impede
                  me accepting the Offer,

         and for the avoidance of doubt,  references in this  paragraph  2(c) to
         any  agreement,  arrangement  or  obligation  includes  any  agreement,
         arrangement or obligation  whether or not legally binding or subject to
         any  condition or which is to take effect if the Offer closes or lapses
         or if this  undertaking  ceases to be  binding or  following  any other
         event; or

(d)      save for the acquisition of any further shares in Linda on the exercise
         of options referred to in Part C of the Schedule, I shall not purchase,
         sell or otherwise  deal in any shares or other  securities  of Linda or
         Amerada  Hess  or  any  interest  therein  (including  any  derivatives
         referenced to such securities).


Undertaking to accept the Offer
3.       In  consideration  of Amerada Hess's agreement in paragraph 9.1 to make
the Offer, I undertake to Amerada Hess that:

(a)      I shall accept the Offer in respect of the Linda  Shares in  accordance
         with  the  procedure  for  acceptance  set out in the  formal  document
         containing  the Offer (the "Offer  Document") not later than seven days
         after Amerada Hess posts the Offer Document to Linda  shareholders  and
         shall  perform the  agreement to which that  acceptance  gives rise, in
         accordance with the relevant provisions of the Offer Document;

(b)      I shall take all action within my power to procure that the  registered
         holder of the  Beneficial  Securities  accepts the Offer in  accordance
         with the  relevant  provisions  of the Offer  Document and performs the
         agreement to which that  acceptance  gives rise, in accordance with the
         relevant provisions of the Offer Document;

(c)      I shall  accept  the Offer in respect of any  Further  Linda  Shares in
         accordance  with the  procedure  for  acceptance  set out in the  Offer
         Document not later than two days after the date I become the registered
         holder of the Further  Linda Shares and shall  perform the agreement to
         which that  acceptance  gives rise,  in  accordance  with the  relevant
         provisons of the Offer Document;

(d)      I shall take all action within my power to procure that the  registered
         holder  of any  further  ordinary  shares in Linda in which I acquire a
         beneficial  interest after the date of this  undertaking but of which I
         do not become  the  registered  holder  ("Further  Beneficial  Shares")
         accepts the offer and performs the  agreement to which that  acceptance
         gives rise in  accordance  with the  relevant  provisions  of the Offer
         Document.

(e)      I shall not withdraw any  acceptances  of the Offer and shall cause the
         registered   holder(s)  of  any  Beneficial   Shares  and  any  Further
         Beneficial Shares not to do so; and

(f)      pursuant to the Offer,  Amerada Hess will acquire the Linda Shares, the
         Beneficial  Shares and any  Further  Linda  Shares  from me free of any
         lien,  charge,  option,  equity or  encumbrance  and together  with all
         rights of any nature  attaching to those shares  including the right to
         all dividends declared or paid after the date of this undertaking.


Voting Rights
4.1 From the time Amerada Hess announces the Offer to the time the Offer becomes
wholly unconditional, lapses or is withdrawn:

(a)      I shall exercise the votes attaching to my Linda Shares and any Further
         Linda Shares on a Relevant  Resolution  (as defined in  paragraph  4.3)
         only in accordance with Amerada Hess's directions;

(b)      I shall  exercise  the  rights  attaching  to my Linda  Shares  and any
         Further  Linda  Shares to  requisition  or join in  requisitioning  any
         general or class  meeting of Linda for the  purposes of  considering  a
         Relevant  Resolution  and to require  Linda  pursuant  to  section  376
         Companies  Act  1985  to  give  notice  of  such a  resolution  only in
         accordance with Amerada Hess's directions;

(c)      I shall cause the registered holder(s) of any Beneficial Shares and any
         Further Beneficial Shares to comply with paragraphs 4.1(a) and 4.1(b).

4.2  For the  purpose  of  voting  or  causing  votes  to be cast on a  Relevant
Resolution,  I shall  execute  any  form  of  proxy  required  by  Amerada  Hess
appointing  any  person  nominated  by  Amerada  Hess to attend  and vote at the
relevant general meeting of Linda .

4.3      A "Relevant Resolution" means:

(a)      a resolution  (whether or not  amended)  proposed at a general or class
         meeting of Linda, or at an adjourned  meeting,  the passing of which is
         necessary to implement the Offer or which,  if passed,  might result in
         any condition of the Offer not being fulfilled or which might impede or
         frustrate the Offer in any way;

(b)      a  resolution  to  adjourn a general or class  meeting  of Linda  whose
         business  includes the  consideration  of a resolution  falling  within
         paragraph 4.3(a); and

(c)      a resolution to amend a resolution  falling within  paragraph 4.3(a) or
         paragraph 4.3(b).


Documentation
5.1      I consent to:

(a)      the  inclusion  of  references  to me and this  undertaking  in Amerada
         Hess's  announcement  of the Offer (the "Press  Announcement")  as they
         appear in the attached draft of the Press Announcement;

(b)      particulars  of this  undertaking  and my holdings of, and dealings in,
         relevant  securities  of Linda and Amerada  Hess being  included in the
         Offer Document and any other related or ancillary  document as required
         by the Code; and

(c)      this  undertaking  being available for inspection  until the end of the
         offer period (as defined in the Code).

5.2 I shall  promptly  give you all  information  and any  assistance as you may
reasonably require for the preparation of the Offer Document and all related and
ancillary  documents in order to comply with the  requirements  of the Code, the
Financial  Services  Authority and the London Stock Exchange and any other legal
or regulatory  requirement or body. I shall immediately notify you in writing of
any  material  change in the  accuracy or impact of any  information  previously
given to you.


Secrecy
6. I will keep secret the possibility, terms and conditions of the Offer and the
existence and terms of this undertaking until the Press Announcement is released
provided  that I may disclose the same to Linda and its advisers in which case I
will use reasonable  endeavours to ensure that they observe  secrecy in the same
terms.  The  obligations  in this  paragraph  will survive  termination  of this
undertaking.


Interpretation
7. In this undertaking the "Offer" means the offer to be made by or on behalf of
Amerada Hess to acquire  ordinary  shares of 25p each in the capital of Linda on
substantially the terms of the Press  Announcement or on such other terms as may
be agreed  between  Amerada  Hess and Linda or as may be required to comply with
the  requirements  of the Panel on  Takeovers  and Mergers  (the  "Panel"),  the
Financial Services  Authority or the London Stock Exchange.  A reference in this
undertaking to the "Offer" also includes any new, increased,  renewed or revised
offer made by or on behalf of Amerada Hess to acquire shares in Linda,  provided
that the terms of such offer are,  in the  opinion  of  Goldman  Sachs,  no less
favourable to acceptors than the terms set out in the Press Announcement.


Time of the Essence
8. Any time,  date or period  mentioned in this  undertaking  may be extended by
mutual agreement but as regards any time, date or period  originally fixed or as
extended, time shall be of the essence.


The Offer
9.1 Subject to paragraph 9.2, Amerada Hess agrees to make the Offer if the Press
Announcement is published,  with Amerada Hess's prior approval, in substantially
the form attached (or in such other form as may be agreed  between  Amerada Hess
and LASMO or as may be required to comply with the  requirements of the Panel on
Takeovers and Mergers (the "Panel")) by not later than 8 November 2000. Approval
of  the  release  of  the  Press  Announcement  is at  Amerada  Hess's  absolute
discretion.

9.2 Amerada Hess will not be obliged to make or proceed with the Offer if, after
the Press Announcement is published:

(a)      the Panel consents to Amerada Hess not proceeding with the Offer; or

(b)      Amerada Hess is no longer  required by the City Code of  Takeovers  and
         Mergers (the "Code") to proceed with the Offer.

9.3  Amerada  Hess  shall  have no  liability  to me for any  failure to make or
implement the Offer and I will not be entitled to specific performance of Clause
9.1 if, in each case,  Amerada Hess has become  aware that any  condition of the
Offer  as set out in the  Press  Announcement  has  become  incapable  of  being
fulfilled.

9.4      My obligations under this agreement will lapse if:

(a)      the Press Announcement is not released on 8 November 2000; or

(b)      the  Offer  is not  made  in any of the  circumstances  referred  to in
         paragraph 9.2,

and in these  circumstances  neither party will have any claim against the other
except in respect of any prior breach.

If the undertaking lapses, I shall have no claim against Amerada Hess.


Director's undertakings
10.1 As a director  of Linda,  I shall use my best  endeavours  to procure  that
Linda and the board of directors of Linda:

(a)      provide all assistance which Amerada Hess reasonably requests to enable
         it to  prepare  the  Offer  Document  and  all  related  and  ancillary
         documents in accordance with the requirements of the Code, the SEC, the
         Financial  Services  Authority  and the London  Stock  Exchange and any
         other legal or regulatory requirement or body;

(b)      provide  all  assistance  which  Amerada  Hess  reasonably  requests to
         Amerada Hess as may be required to obtain the  clearances  and consents
         referred to in the Press Announcement;

(c)      if the Offer becomes  unconditional  in all respects,  promptly approve
         the  appointment as  director(s)  of Linda of the persons  nominated by
         Amerada  Hess and,  if required by Amerada  Hess,  I shall  resign as a
         director of Linda ;

(d)      agree to any  extension  of time limits in the Code for posting of this
         Offer which Amerada Hess requests and which the Panel approves; and

(e)      not make (and that no-one makes on behalf of Linda):

             (i)  any  announcement  before the Press  Announcement  is released
                  which refers expressly or implicitly to Amerada Hess; or

            (ii)  any other  announcement  in connection  with the Offer without
                  prior consultation with Amerada Hess,

         unless Amerada Hess consents in writing or the relevant announcement is
         required by law or any regulatory provision.

10.2     I shall:

(a)      not directly or  indirectly  solicit any person other than Amerada Hess
         to propose or announce  any offer for or any scheme of  arrangement  in
         respect of any shares or other securities of Linda; or

(b)      not directly or indirectly  initiate any  discussions  with, or provide
         any information  to, any person who is or may be considering  proposing
         or announcing such an offer or scheme; or

(c)      recommend acceptance of the Offer to Linda shareholders and not modify,
         qualify or withdraw that  recommendation at any time, except insofar as
         to do so would be inconsistent with my duties as a Director of LASMO.

10.3 I shall promptly inform you of any approach by a third party which may lead
to an offer for Linda or the occurrence of any matter referred to above and will
keep you  fully  informed  of the same  (but  not of the  value of the  relevant
proposal or the identity of its proponent).

10.4 I confirm  that I know of no matter or  circumstance  which might mean that
any  condition  of the  Offer  set  out  in the  Press  Announcement  cannot  be
fulfilled.  I will  have  no  liability  to  Amerada  Hess  in  respect  of this
confirmation.


Confirmation
11. I confirm that in signing  this letter I am not a customer of Goldman  Sachs
for the purposes of the Rules of The Securities  and Futures  Authority and that
Goldman Sachs does not owe me any of the duties which it owes to its  customers.
I confirm that I have had an adequate  opportunity to consider whether or not to
give this undertaking and to obtain independent advice.


Power of Attorney
12.1  In  order  to  secure  the  performance  of  my  obligations   under  this
undertaking, I appoint any director of Amerada Hess as my attorney:

(a)      if I fail to accept or to procure acceptance of the Offer in accordance
         with  paragraphs  3(a),  3(b) or 3(c) or if I fail to accept  the offer
         referred to in paragraph 3(d) in accordance with that paragraph,  in my
         name and on my behalf to do all  things  and to  execute  all deeds and
         other  documents as may be necessary or desirable to accept such offers
         in respect of the Linda  Shares,  the  Beneficial  Shares,  any Further
         Linda  Shares  and  the  options  referred  to in  paragraph  3(d)  (as
         appropriate); and

(b)      to execute any form of proxy  required by Amerada Hess  appointing  any
         person  nominated  by  Amerada  Hess to attend  and vote on a  Relevant
         Resolution (as defined in paragraph 4.3) at a general meeting of Linda.

12.2 I agree  that this power of  attorney  is given by way of  security  and is
irrevocable  in accordance  with section 4 Powers of Attorney Act 1971 until the
Offer closes, lapses or is withdrawn.


Specific Performance
13. I agree  that,  if I fail to  accept  the  Offer  in  accordance  with  this
undertaking  or breach any of my  obligations,  damages would not be an adequate
remedy and accordingly  Amerada Hess shall be entitled to the remedy of specific
performance.


14.      General
14.1 The obligations I have accepted under this agreement are without  prejudice
to any  rights  of  Amerada  Hess or  Goldman  Sachs at  common  law or  equity.
Invalidity  of any  provision  of this  agreement  will  not  affect  any  other
provision.

14.2 Any  failure  or delay by any  person in  exercising  any  right,  power or
privilege  under  this  agreement  will not  comprise  a waiver  and a single or
partial exercise will not restrict any further exercise.

14.3 This  agreement is governed by and is to be construed  in  accordance  with
English law and each of the parties submits to the exclusive jurisdiction of the
English courts for all purposes in connection with this agreement.




                                    SCHEDULE

                                 Existing Shares

PART A - Registered Holdings of Linda Ordinary Shares

Registered Holder                                             Ordinary Shares of
                                                              25p each
(Print name of giver of
undertaking)

ROY GREGORY REYNOLDS                                                8,075

PART B - Beneficial Holdings of Linda Ordinary Shares

Beneficial Owner                                              Ordinary Shares of
                                                              25p each
(Print name)

ROY GREGORY REYNOLDS                                                8,390


PART C -  Options  and other  rights  to  acquire  Linda  securities  (including
options)

Holder                                                        Type of option
(Print name)

- -----------------------

SIGNED and DELIVERED as a DEED by......................................


Yours faithfully,


Signature         DR ROY REYNOLDS

Name              DR ROY REYNOLDS

in the presence of:

Signature of witness:      M. C. REYNOLDS

Name:                      MONICA REYNOLDS

Address:                   Boorne Lodge
                           Fairoak Lane
                           Oxshott  KT22 0TR

                                                                       EXHIBIT 7
To:      Amerada Hess Corporation plc ("Amerada Hess")

and      Goldman Sachs International ("Goldman Sachs")


                                                                 6 November 2000


Dear Sirs,

I  understand  that  Amerada  Hess  intends to make an offer to acquire  all the
issued ordinary share capital of Linda plc ("Linda")  substantially on the terms
of the  attached  draft press  announcement.  This letter sets out the terms and
conditions  on which I will accept the Offer (as defined in  paragraph 7 of this
undertaking) when it is made.


Shareholdings
1.       I represent and warrant to Amerada Hess that:

(a)      I am the  registered  holder  and  beneficial  owner of the  number  of
         ordinary  shares of 25p each in the capital of Linda shown in Part A of
         the  Schedule  (the "Linda  Shares")  and that I hold these free of any
         lien,  charge,  option,  equity or encumbrance  and free from any third
         party right or interest;

(b)      I am the beneficial owner (but not registered  holder) of the number of
         ordinary  shares of 25p each in the capital of Linda shown in Part B of
         the Schedule  (the  "Beneficial  Shares") and that I hold these free of
         any lien, charge, option, equity or encumbrance and free from any third
         party right or interest;

(c)      the information  set out in the Schedule  regarding the shares of Linda
         in which I am interested is complete and accurate;

(d)      the Schedule  contains  complete  and accurate  details of all options,
         warrants  and other  rights I may have to  subscribe  for,  purchase or
         otherwise acquire any securities of Linda; and

(e)      I have full  power and  authority  to enter into this  undertaking,  to
         perform the obligations  under it and to accept the Offer in respect of
         the Linda shares.


Dealings
2.       I undertake to Amerada Hess that before the Offer closes,  lapses or is
         withdrawn, I shall not:

(a)      sell, transfer,  charge,  encumber,  grant any option over or otherwise
         dispose  of any  Linda  Shares  or any  Beneficial  Shares or any other
         shares or securities in Linda issued or unconditionally  allotted to me
         or otherwise  acquired by me before then ("Further Linda Shares") other
         than pursuant to my acceptance of the Offer;

(b)      accept any other offer in respect of the shares or securities  referred
         to in paragraph 2(a);

(c)      (other  than  pursuant  to the  Offer)  enter  into  any  agreement  or
         arrangement  or permit any agreement or  arrangement to be entered into
         or incur any obligation or permit any obligation to arise:

             (i)  to do any of the acts referred to in paragraphs 2(a) or 2(b);

            (ii)  in  relation  to, or  operating  by  reference  to,  the Linda
                  Shares, the Beneficial Shares or any Further Linda Shares; or

           (iii)  which, in relation to the Linda Shares,  the Beneficial Shares
                  or any Further Linda Shares, would or might restrict or impede
                  me accepting the Offer,

         and for the avoidance of doubt,  references in this  paragraph  2(c) to
         any  agreement,  arrangement  or  obligation  includes  any  agreement,
         arrangement or obligation  whether or not legally binding or subject to
         any  condition or which is to take effect if the Offer closes or lapses
         or if this  undertaking  ceases to be  binding or  following  any other
         event; or

(d)      save for the acquisition of any further shares in Linda on the exercise
         of options referred to in Part C of the Schedule, I shall not purchase,
         sell or otherwise  deal in any shares or other  securities  of Linda or
         Amerada  Hess  or  any  interest  therein  (including  any  derivatives
         referenced to such securities).


Undertaking to accept the Offer
3.       In  consideration  of Amerada Hess's agreement in paragraph 9.1 to make
the Offer, I undertake to Amerada Hess that:

(a)      I shall accept the Offer in respect of the Linda  Shares in  accordance
         with  the  procedure  for  acceptance  set out in the  formal  document
         containing  the Offer (the "Offer  Document") not later than seven days
         after Amerada Hess posts the Offer Document to Linda  shareholders  and
         shall  perform the  agreement to which that  acceptance  gives rise, in
         accordance with the relevant provisions of the Offer Document;

(b)      I shall take all action within my power to procure that the  registered
         holder of the  Beneficial  Securities  accepts the Offer in  accordance
         with the  relevant  provisions  of the Offer  Document and performs the
         agreement to which that  acceptance  gives rise, in accordance with the
         relevant provisions of the Offer Document;

(c)      I shall  accept  the Offer in respect of any  Further  Linda  Shares in
         accordance  with the  procedure  for  acceptance  set out in the  Offer
         Document not later than two days after the date I become the registered
         holder of the Further  Linda Shares and shall  perform the agreement to
         which that  acceptance  gives rise,  in  accordance  with the  relevant
         provisons of the Offer Document;

(d)      I shall take all action within my power to procure that the  registered
         holder  of any  further  ordinary  shares in Linda in which I acquire a
         beneficial  interest after the date of this  undertaking but of which I
         do not become  the  registered  holder  ("Further  Beneficial  Shares")
         accepts the offer and performs the  agreement to which that  acceptance
         gives rise in  accordance  with the  relevant  provisions  of the Offer
         Document.

(e)      I shall not withdraw any  acceptances  of the Offer and shall cause the
         registered   holder(s)  of  any  Beneficial   Shares  and  any  Further
         Beneficial Shares not to do so; and

(f)      pursuant to the Offer,  Amerada Hess will acquire the Linda Shares, the
         Beneficial  Shares and any  Further  Linda  Shares  from me free of any
         lien,  charge,  option,  equity or  encumbrance  and together  with all
         rights of any nature  attaching to those shares  including the right to
         all dividends declared or paid after the date of this undertaking.


Voting Rights
4.1 From the time Amerada Hess announces the Offer to the time the Offer becomes
wholly unconditional, lapses or is withdrawn:

(a)      I shall exercise the votes attaching to my Linda Shares and any Further
         Linda Shares on a Relevant  Resolution  (as defined in  paragraph  4.3)
         only in accordance with Amerada Hess's directions;

(b)      I shall  exercise  the  rights  attaching  to my Linda  Shares  and any
         Further  Linda  Shares to  requisition  or join in  requisitioning  any
         general or class  meeting of Linda for the  purposes of  considering  a
         Relevant  Resolution  and to require  Linda  pursuant  to  section  376
         Companies  Act  1985  to  give  notice  of  such a  resolution  only in
         accordance with Amerada Hess's directions;

(c)      I shall cause the registered holder(s) of any Beneficial Shares and any
         Further Beneficial Shares to comply with paragraphs 4.1(a) and 4.1(b).

4.2  For the  purpose  of  voting  or  causing  votes  to be cast on a  Relevant
Resolution,  I shall  execute  any  form  of  proxy  required  by  Amerada  Hess
appointing  any  person  nominated  by  Amerada  Hess to attend  and vote at the
relevant general meeting of Linda .

4.3      A "Relevant Resolution" means:

(a)      a resolution  (whether or not  amended)  proposed at a general or class
         meeting of Linda, or at an adjourned  meeting,  the passing of which is
         necessary to implement the Offer or which,  if passed,  might result in
         any condition of the Offer not being fulfilled or which might impede or
         frustrate the Offer in any way;

(b)      a  resolution  to  adjourn a general or class  meeting  of Linda  whose
         business  includes the  consideration  of a resolution  falling  within
         paragraph 4.3(a); and

(c)      a resolution to amend a resolution  falling within  paragraph 4.3(a) or
         paragraph 4.3(b).


Documentation
5.1      I consent to:

(a)      the  inclusion  of  references  to me and this  undertaking  in Amerada
         Hess's  announcement  of the Offer (the "Press  Announcement")  as they
         appear in the attached draft of the Press Announcement;

(b)      particulars  of this  undertaking  and my holdings of, and dealings in,
         relevant  securities  of Linda and Amerada  Hess being  included in the
         Offer Document and any other related or ancillary  document as required
         by the Code; and

(c)      this  undertaking  being available for inspection  until the end of the
         offer period (as defined in the Code).

5.2 I shall  promptly  give you all  information  and any  assistance as you may
reasonably require for the preparation of the Offer Document and all related and
ancillary  documents in order to comply with the  requirements  of the Code, the
Financial  Services  Authority and the London Stock Exchange and any other legal
or regulatory  requirement or body. I shall immediately notify you in writing of
any  material  change in the  accuracy or impact of any  information  previously
given to you.


Secrecy
6. I will keep secret the possibility, terms and conditions of the Offer and the
existence and terms of this undertaking until the Press Announcement is released
provided  that I may disclose the same to Linda and its advisers in which case I
will use reasonable  endeavours to ensure that they observe  secrecy in the same
terms.  The  obligations  in this  paragraph  will survive  termination  of this
undertaking.


Interpretation
7. In this undertaking the "Offer" means the offer to be made by or on behalf of
Amerada Hess to acquire  ordinary  shares of 25p each in the capital of Linda on
substantially the terms of the Press  Announcement or on such other terms as may
be agreed  between  Amerada  Hess and Linda or as may be required to comply with
the  requirements  of the Panel on  Takeovers  and Mergers  (the  "Panel"),  the
Financial Services  Authority or the London Stock Exchange.  A reference in this
undertaking to the "Offer" also includes any new, increased,  renewed or revised
offer made by or on behalf of Amerada Hess to acquire shares in Linda,  provided
that the terms of such offer are,  in the  opinion  of  Goldman  Sachs,  no less
favourable to acceptors than the terms set out in the Press Announcement.


Time of the Essence
8. Any time,  date or period  mentioned in this  undertaking  may be extended by
mutual agreement but as regards any time, date or period  originally fixed or as
extended, time shall be of the essence.


The Offer
9.1 Subject to paragraph 9.2, Amerada Hess agrees to make the Offer if the Press
Announcement is published,  with Amerada Hess's prior approval, in substantially
the form attached (or in such other form as may be agreed  between  Amerada Hess
and LASMO or as may be required to comply with the  requirements of the Panel on
Takeovers and Mergers (the "Panel")) by not later than 8 November 2000. Approval
of  the  release  of  the  Press  Announcement  is at  Amerada  Hess's  absolute
discretion.

9.2 Amerada Hess will not be obliged to make or proceed with the Offer if, after
the Press Announcement is published:

(a)      the Panel consents to Amerada Hess not proceeding with the Offer; or

(b)      Amerada Hess is no longer  required by the City Code of  Takeovers  and
         Mergers (the "Code") to proceed with the Offer.

9.3  Amerada  Hess  shall  have no  liability  to me for any  failure to make or
implement the Offer and I will not be entitled to specific performance of Clause
9.1 if, in each case,  Amerada Hess has become  aware that any  condition of the
Offer  as set out in the  Press  Announcement  has  become  incapable  of  being
fulfilled.

9.4      My obligations under this agreement will lapse if:

(a)      the Press Announcement is not released on 8 November 2000; or

(b)      the  Offer  is not  made  in any of the  circumstances  referred  to in
         paragraph 9.2,

and in these  circumstances  neither party will have any claim against the other
except in respect of any prior breach.

If the undertaking lapses, I shall have no claim against Amerada Hess.


Director's undertakings
10.1 As a director  of Linda,  I shall use my best  endeavours  to procure  that
Linda and the board of directors of Linda:

(a)      provide all assistance which Amerada Hess reasonably requests to enable
         it to  prepare  the  Offer  Document  and  all  related  and  ancillary
         documents in accordance with the requirements of the Code, the SEC, the
         Financial  Services  Authority  and the London  Stock  Exchange and any
         other legal or regulatory requirement or body;

(b)      provide  all  assistance  which  Amerada  Hess  reasonably  requests to
         Amerada Hess as may be required to obtain the  clearances  and consents
         referred to in the Press Announcement;

(c)      if the Offer becomes  unconditional  in all respects,  promptly approve
         the  appointment as  director(s)  of Linda of the persons  nominated by
         Amerada  Hess and,  if required by Amerada  Hess,  I shall  resign as a
         director of Linda ;

(d)      agree to any  extension  of time limits in the Code for posting of this
         Offer which Amerada Hess requests and which the Panel approves; and

(e)      not make (and that no-one makes on behalf of Linda):

             (i)  any  announcement  before the Press  Announcement  is released
                  which refers expressly or implicitly to Amerada Hess; or

            (ii)  any other  announcement  in connection  with the Offer without
                  prior consultation with Amerada Hess,

         unless Amerada Hess consents in writing or the relevant announcement is
         required by law or any regulatory provision.

10.2     I shall:

(a)      not directly or  indirectly  solicit any person other than Amerada Hess
         to propose or announce  any offer for or any scheme of  arrangement  in
         respect of any shares or other securities of Linda; or

(b)      not directly or indirectly  initiate any  discussions  with, or provide
         any information  to, any person who is or may be considering  proposing
         or announcing such an offer or scheme; or

(c)      recommend acceptance of the Offer to Linda shareholders and not modify,
         qualify or withdraw that  recommendation at any time, except insofar as
         to do so would be inconsistent with my duties as a Director of LASMO.

10.3 I shall promptly inform you of any approach by a third party which may lead
to an offer for Linda or the occurrence of any matter referred to above and will
keep you  fully  informed  of the same  (but  not of the  value of the  relevant
proposal or the identity of its proponent).

10.4 I confirm  that I know of no matter or  circumstance  which might mean that
any  condition  of the  Offer  set  out  in the  Press  Announcement  cannot  be
fulfilled.  I will  have  no  liability  to  Amerada  Hess  in  respect  of this
confirmation.


Confirmation
11. I confirm that in signing  this letter I am not a customer of Goldman  Sachs
for the purposes of the Rules of The Securities  and Futures  Authority and that
Goldman Sachs does not owe me any of the duties which it owes to its  customers.
I confirm that I have had an adequate  opportunity to consider whether or not to
give this undertaking and to obtain independent advice.


Power of Attorney
12.1  In  order  to  secure  the  performance  of  my  obligations   under  this
undertaking, I appoint any director of Amerada Hess as my attorney:

(a)      if I fail to accept or to procure acceptance of the Offer in accordance
         with  paragraphs  3(a),  3(b) or 3(c) or if I fail to accept  the offer
         referred to in paragraph 3(d) in accordance with that paragraph,  in my
         name and on my behalf to do all  things  and to  execute  all deeds and
         other  documents as may be necessary or desirable to accept such offers
         in respect of the Linda  Shares,  the  Beneficial  Shares,  any Further
         Linda  Shares  and  the  options  referred  to in  paragraph  3(d)  (as
         appropriate); and

(b)      to execute any form of proxy  required by Amerada Hess  appointing  any
         person  nominated  by  Amerada  Hess to attend  and vote on a  Relevant
         Resolution (as defined in paragraph 4.3) at a general meeting of Linda.

12.2 I agree  that this power of  attorney  is given by way of  security  and is
irrevocable  in accordance  with section 4 Powers of Attorney Act 1971 until the
Offer closes, lapses or is withdrawn.


Specific Performance
13. I agree  that,  if I fail to  accept  the  Offer  in  accordance  with  this
undertaking  or breach any of my  obligations,  damages would not be an adequate
remedy and accordingly  Amerada Hess shall be entitled to the remedy of specific
performance.


14.      General
14.1 The obligations I have accepted under this agreement are without  prejudice
to any  rights  of  Amerada  Hess or  Goldman  Sachs at  common  law or  equity.
Invalidity  of any  provision  of this  agreement  will  not  affect  any  other
provision.

14.2 Any  failure  or delay by any  person in  exercising  any  right,  power or
privilege  under  this  agreement  will not  comprise  a waiver  and a single or
partial exercise will not restrict any further exercise.

14.3 This  agreement is governed by and is to be construed  in  accordance  with
English law and each of the parties submits to the exclusive jurisdiction of the
English courts for all purposes in connection with this agreement.




                                    SCHEDULE

                                 Existing Shares

PART A - Registered Holdings of Linda Ordinary Shares

Registered Holder                                             Ordinary Shares of
                                                              25p each
(Print name of giver of
undertaking)

NIGEL VICTOR TURNBULL                                               32,442

PART B - Beneficial Holdings of Linda Ordinary Shares

Beneficial Owner                                              Ordinary Shares of
                                                              25p each
(Print name)

- -------------------------


PART C -  Options  and other  rights  to  acquire  Linda  securities  (including
options)

Holder                                                        Type of option
(Print name)

- -----------------------

SIGNED and DELIVERED as a DEED by......................................


Yours faithfully,


Signature

Name                       JOESPH DARBY as solicitor for Mr Nigel Turnbull

in the presence of:

Signature of witness:      AO BRIEN

Name:                      AO BRIEN

Address:                   101 Bishopsgate
                           London  EC2M 3XH
                           Solicitor

                                                                       EXHIBIT 8
To:      Amerada Hess Corporation plc ("Amerada Hess")

and      Goldman Sachs International ("Goldman Sachs")


                                                                 6 November 2000


Dear Sirs,

I  understand  that  Amerada  Hess  intends to make an offer to acquire  all the
issued ordinary share capital of Linda plc ("Linda")  substantially on the terms
of the  attached  draft press  announcement.  This letter sets out the terms and
conditions  on which I will accept the Offer (as defined in  paragraph 7 of this
undertaking) when it is made.


Shareholdings
1.       I represent and warrant to Amerada Hess that:

(a)      I am the  registered  holder  and  beneficial  owner of the  number  of
         ordinary  shares of 25p each in the capital of Linda shown in Part A of
         the  Schedule  (the "Linda  Shares")  and that I hold these free of any
         lien,  charge,  option,  equity or encumbrance  and free from any third
         party right or interest;

(b)      I am the beneficial owner (but not registered  holder) of the number of
         ordinary  shares of 25p each in the capital of Linda shown in Part B of
         the Schedule  (the  "Beneficial  Shares") and that I hold these free of
         any lien, charge, option, equity or encumbrance and free from any third
         party right or interest;

(c)      the information  set out in the Schedule  regarding the shares of Linda
         in which I am interested is complete and accurate;

(d)      the Schedule  contains  complete  and accurate  details of all options,
         warrants  and other  rights I may have to  subscribe  for,  purchase or
         otherwise acquire any securities of Linda; and

(e)      I have full  power and  authority  to enter into this  undertaking,  to
         perform the obligations  under it and to accept the Offer in respect of
         the Linda shares.


Dealings
2.       I undertake to Amerada Hess that before the Offer closes,  lapses or is
withdrawn, I shall not:

(a)      sell, transfer,  charge,  encumber,  grant any option over or otherwise
         dispose  of any  Linda  Shares  or any  Beneficial  Shares or any other
         shares or securities in Linda issued or unconditionally  allotted to me
         or otherwise  acquired by me before then ("Further Linda Shares") other
         than pursuant to my acceptance of the Offer;

(b)      accept any other offer in respect of the shares or securities  referred
         to in paragraph 2(a);

(c)      (other  than  pursuant  to the  Offer)  enter  into  any  agreement  or
         arrangement  or permit any agreement or  arrangement to be entered into
         or incur any obligation or permit any obligation to arise:

             (i)  to do any of the acts referred to in paragraphs 2(a) or 2(b);

            (ii)  in  relation  to, or  operating  by  reference  to,  the Linda
                  Shares, the Beneficial Shares or any Further Linda Shares; or

           (iii)  which, in relation to the Linda Shares,  the Beneficial Shares
                  or any Further Linda Shares, would or might restrict or impede
                  me accepting the Offer,

         and for the avoidance of doubt,  references in this  paragraph  2(c) to
         any  agreement,  arrangement  or  obligation  includes  any  agreement,
         arrangement or obligation  whether or not legally binding or subject to
         any  condition or which is to take effect if the Offer closes or lapses
         or if this  undertaking  ceases to be  binding or  following  any other
         event; or

(d)      save for the acquisition of any further shares in Linda on the exercise
         of options referred to in Part C of the Schedule, I shall not purchase,
         sell or otherwise  deal in any shares or other  securities  of Linda or
         Amerada  Hess  or  any  interest  therein  (including  any  derivatives
         referenced to such securities).


Undertaking to accept the Offer
3.       In  consideration  of Amerada Hess's agreement in paragraph 9.1 to make
the Offer, I undertake to Amerada Hess that:

(a)      I shall accept the Offer in respect of the Linda  Shares in  accordance
         with  the  procedure  for  acceptance  set out in the  formal  document
         containing  the Offer (the "Offer  Document") not later than seven days
         after Amerada Hess posts the Offer Document to Linda  shareholders  and
         shall  perform the  agreement to which that  acceptance  gives rise, in
         accordance with the relevant provisions of the Offer Document;

(b)      I shall take all action within my power to procure that the  registered
         holder of the  Beneficial  Securities  accepts the Offer in  accordance
         with the  relevant  provisions  of the Offer  Document and performs the
         agreement to which that  acceptance  gives rise, in accordance with the
         relevant provisions of the Offer Document;

(c)      I shall  accept  the Offer in respect of any  Further  Linda  Shares in
         accordance  with the  procedure  for  acceptance  set out in the  Offer
         Document not later than two days after the date I become the registered
         holder of the Further  Linda Shares and shall  perform the agreement to
         which that  acceptance  gives rise,  in  accordance  with the  relevant
         provisons of the Offer Document;

(d)      I shall take all action within my power to procure that the  registered
         holder  of any  further  ordinary  shares in Linda in which I acquire a
         beneficial  interest after the date of this  undertaking but of which I
         do not become  the  registered  holder  ("Further  Beneficial  Shares")
         accepts the offer and performs the  agreement to which that  acceptance
         gives rise in  accordance  with the  relevant  provisions  of the Offer
         Document.

(e)      I shall not withdraw any  acceptances  of the Offer and shall cause the
         registered   holder(s)  of  any  Beneficial   Shares  and  any  Further
         Beneficial Shares not to do so; and

(f)      pursuant to the Offer,  Amerada Hess will acquire the Linda Shares, the
         Beneficial  Shares and any  Further  Linda  Shares  from me free of any
         lien,  charge,  option,  equity or  encumbrance  and together  with all
         rights of any nature  attaching to those shares  including the right to
         all dividends declared or paid after the date of this undertaking.


Voting Rights
4.1 From the time Amerada Hess announces the Offer to the time the Offer becomes
wholly unconditional, lapses or is withdrawn:

(a)      I shall exercise the votes attaching to my Linda Shares and any Further
         Linda Shares on a Relevant  Resolution  (as defined in  paragraph  4.3)
         only in accordance with Amerada Hess's directions;

(b)      I shall  exercise  the  rights  attaching  to my Linda  Shares  and any
         Further  Linda  Shares to  requisition  or join in  requisitioning  any
         general or class  meeting of Linda for the  purposes of  considering  a
         Relevant  Resolution  and to require  Linda  pursuant  to  section  376
         Companies  Act  1985  to  give  notice  of  such a  resolution  only in
         accordance with Amerada Hess's directions;

(c)      I shall cause the registered holder(s) of any Beneficial Shares and any
         Further Beneficial Shares to comply with paragraphs 4.1(a) and 4.1(b).

4.2  For the  purpose  of  voting  or  causing  votes  to be cast on a  Relevant
Resolution,  I shall  execute  any  form  of  proxy  required  by  Amerada  Hess
appointing  any  person  nominated  by  Amerada  Hess to attend  and vote at the
relevant general meeting of Linda .

4.3      A "Relevant Resolution" means:

(a)      a resolution  (whether or not  amended)  proposed at a general or class
         meeting of Linda, or at an adjourned  meeting,  the passing of which is
         necessary to implement the Offer or which,  if passed,  might result in
         any condition of the Offer not being fulfilled or which might impede or
         frustrate the Offer in any way;

(b)      a  resolution  to  adjourn a general or class  meeting  of Linda  whose
         business  includes the  consideration  of a resolution  falling  within
         paragraph 4.3(a); and

(c)      a resolution to amend a resolution  falling within  paragraph 4.3(a) or
         paragraph 4.3(b).


Documentation
5.1      I consent to:

(a)      the  inclusion  of  references  to me and this  undertaking  in Amerada
         Hess's  announcement  of the Offer (the "Press  Announcement")  as they
         appear in the attached draft of the Press Announcement;

(b)      particulars  of this  undertaking  and my holdings of, and dealings in,
         relevant  securities  of Linda and Amerada  Hess being  included in the
         Offer Document and any other related or ancillary  document as required
         by the Code; and

(c)      this  undertaking  being available for inspection  until the end of the
         offer period (as defined in the Code).

5.2 I shall  promptly  give you all  information  and any  assistance as you may
reasonably require for the preparation of the Offer Document and all related and
ancillary  documents in order to comply with the  requirements  of the Code, the
Financial  Services  Authority and the London Stock Exchange and any other legal
or regulatory  requirement or body. I shall immediately notify you in writing of
any  material  change in the  accuracy or impact of any  information  previously
given to you.


Secrecy
6. I will keep secret the possibility, terms and conditions of the Offer and the
existence and terms of this undertaking until the Press Announcement is released
provided  that I may disclose the same to Linda and its advisers in which case I
will use reasonable  endeavours to ensure that they observe  secrecy in the same
terms.  The  obligations  in this  paragraph  will survive  termination  of this
undertaking.


Interpretation
7. In this undertaking the "Offer" means the offer to be made by or on behalf of
Amerada Hess to acquire  ordinary  shares of 25p each in the capital of Linda on
substantially the terms of the Press  Announcement or on such other terms as may
be agreed  between  Amerada  Hess and Linda or as may be required to comply with
the  requirements  of the Panel on  Takeovers  and Mergers  (the  "Panel"),  the
Financial Services  Authority or the London Stock Exchange.  A reference in this
undertaking to the "Offer" also includes any new, increased,  renewed or revised
offer made by or on behalf of Amerada Hess to acquire shares in Linda,  provided
that the terms of such offer are,  in the  opinion  of  Goldman  Sachs,  no less
favourable to acceptors than the terms set out in the Press Announcement.


Time of the Essence
8. Any time,  date or period  mentioned in this  undertaking  may be extended by
mutual agreement but as regards any time, date or period  originally fixed or as
extended, time shall be of the essence.


The Offer
9.1 Subject to paragraph 9.2, Amerada Hess agrees to make the Offer if the Press
Announcement is published,  with Amerada Hess's prior approval, in substantially
the form attached (or in such other form as may be agreed  between  Amerada Hess
and LASMO or as may be required to comply with the  requirements of the Panel on
Takeovers and Mergers (the "Panel")) by not later than 8 November 2000. Approval
of  the  release  of  the  Press  Announcement  is at  Amerada  Hess's  absolute
discretion.

9.2 Amerada Hess will not be obliged to make or proceed with the Offer if, after
the Press Announcement is published:

(a)      the Panel consents to Amerada Hess not proceeding with the Offer; or

(b)      Amerada Hess is no longer  required by the City Code of  Takeovers  and
         Mergers (the "Code") to proceed with the Offer.

9.3  Amerada  Hess  shall  have no  liability  to me for any  failure to make or
implement the Offer and I will not be entitled to specific performance of Clause
9.1 if, in each case,  Amerada Hess has become  aware that any  condition of the
Offer  as set out in the  Press  Announcement  has  become  incapable  of  being
fulfilled.

9.4      My obligations under this agreement will lapse if:

(a)      the Press Announcement is not released on 8 November 2000; or

(b)      the  Offer  is not  made  in any of the  circumstances  referred  to in
         paragraph 9.2,

and in these  circumstances  neither party will have any claim against the other
except in respect of any prior breach.

If the undertaking lapses, I shall have no claim against Amerada Hess.


Director's undertakings
10.1 As a director  of Linda,  I shall use my best  endeavours  to procure  that
Linda and the board of directors of Linda:

(a)      provide all assistance which Amerada Hess reasonably requests to enable
         it to  prepare  the  Offer  Document  and  all  related  and  ancillary
         documents in accordance with the requirements of the Code, the SEC, the
         Financial  Services  Authority  and the London  Stock  Exchange and any
         other legal or regulatory requirement or body;

(b)      provide  all  assistance  which  Amerada  Hess  reasonably  requests to
         Amerada Hess as may be required to obtain the  clearances  and consents
         referred to in the Press Announcement;

(c)      if the Offer becomes  unconditional  in all respects,  promptly approve
         the  appointment as  director(s)  of Linda of the persons  nominated by
         Amerada  Hess and,  if required by Amerada  Hess,  I shall  resign as a
         director of Linda ;

(d)      agree to any  extension  of time limits in the Code for posting of this
         Offer which Amerada Hess requests and which the Panel approves; and

(e)      not make (and that no-one makes on behalf of Linda):

             (i)  any  announcement  before the Press  Announcement  is released
                  which refers expressly or implicitly to Amerada Hess; or

            (ii)  any other  announcement  in connection  with the Offer without
                  prior consultation with Amerada Hess,

         unless Amerada Hess consents in writing or the relevant announcement is
         required by law or any regulatory provision.

10.2     I shall:

(a)      not directly or  indirectly  solicit any person other than Amerada Hess
         to propose or announce  any offer for or any scheme of  arrangement  in
         respect of any shares or other securities of Linda; or

(b)      not directly or indirectly  initiate any  discussions  with, or provide
         any information  to, any person who is or may be considering  proposing
         or announcing such an offer or scheme; or

(c)      recommend acceptance of the Offer to Linda shareholders and not modify,
         qualify or withdraw that  recommendation at any time, except insofar as
         to do so would be inconsistent with my duties as a Director of LASMO.

10.3 I shall promptly inform you of any approach by a third party which may lead
to an offer for Linda or the occurrence of any matter referred to above and will
keep you  fully  informed  of the same  (but  not of the  value of the  relevant
proposal or the identity of its proponent).

10.4 I confirm  that I know of no matter or  circumstance  which might mean that
any  condition  of the  Offer  set  out  in the  Press  Announcement  cannot  be
fulfilled.  I will  have  no  liability  to  Amerada  Hess  in  respect  of this
confirmation.


Confirmation
11. I confirm that in signing  this letter I am not a customer of Goldman  Sachs
for the purposes of the Rules of The Securities  and Futures  Authority and that
Goldman Sachs does not owe me any of the duties which it owes to its  customers.
I confirm that I have had an adequate  opportunity to consider whether or not to
give this undertaking and to obtain independent advice.


Power of Attorney
12.1  In  order  to  secure  the  performance  of  my  obligations   under  this
undertaking, I appoint any director of Amerada Hess as my attorney:

(a)      if I fail to accept or to procure acceptance of the Offer in accordance
         with  paragraphs  3(a),  3(b) or 3(c) or if I fail to accept  the offer
         referred to in paragraph 3(d) in accordance with that paragraph,  in my
         name and on my behalf to do all  things  and to  execute  all deeds and
         other  documents as may be necessary or desirable to accept such offers
         in respect of the Linda  Shares,  the  Beneficial  Shares,  any Further
         Linda  Shares  and  the  options  referred  to in  paragraph  3(d)  (as
         appropriate); and

(b)      to execute any form of proxy  required by Amerada Hess  appointing  any
         person  nominated  by  Amerada  Hess to attend  and vote on a  Relevant
         Resolution (as defined in paragraph 4.3) at a general meeting of Linda.

12.2 I agree  that this power of  attorney  is given by way of  security  and is
irrevocable  in accordance  with section 4 Powers of Attorney Act 1971 until the
Offer closes, lapses or is withdrawn.


Specific Performance
13. I agree  that,  if I fail to  accept  the  Offer  in  accordance  with  this
undertaking  or breach any of my  obligations,  damages would not be an adequate
remedy and accordingly  Amerada Hess shall be entitled to the remedy of specific
performance.


14.      General
14.1 The obligations I have accepted under this agreement are without  prejudice
to any  rights  of  Amerada  Hess or  Goldman  Sachs at  common  law or  equity.
Invalidity  of any  provision  of this  agreement  will  not  affect  any  other
provision.

14.2 Any  failure  or delay by any  person in  exercising  any  right,  power or
privilege  under  this  agreement  will not  comprise  a waiver  and a single or
partial exercise will not restrict any further exercise.

14.3 This  agreement is governed by and is to be construed  in  accordance  with
English law and each of the parties submits to the exclusive jurisdiction of the
English courts for all purposes in connection with this agreement.





                                    SCHEDULE

                                 Existing Shares

PART A - Registered Holdings of Linda Ordinary Shares

Registered Holder                                             Ordinary Shares of
                                                              25p each
(Print name of giver of
undertaking)

TIMOTHY PIENNE BRENNAND                                             16,807

PART B - Beneficial Holdings of Linda Ordinary Shares

Beneficial Owner                                              Ordinary Shares of
                                                              25p each
(Print name)

- -------------------------


PART C -  Options  and other  rights  to  acquire  Linda  securities  (including
options)

Holder                                                        Type of option
(Print name)

- -----------------------

SIGNED and DELIVERED as a DEED by......................................


Yours faithfully,


Signature:        JOSEPH DARBY as attorney

Name:             JOSEPH DARBY as attorney

Signature of witness:      AO BRIEN

Name:                      AO BRIEN

Address:                   101 Bishopsgate
                           London  EC2M 3XH
                           Solicitor
                                                                       EXHIBIT 9
To:      Amerada Hess Corporation plc ("Amerada Hess")

and      Goldman Sachs International ("Goldman Sachs")


                                                                   November 2000


Dear Sirs,

I  understand  that  Amerada  Hess  intends to make an offer to acquire  all the
issued ordinary share capital of Linda plc ("Linda")  substantially on the terms
of the  attached  draft press  announcement.  This letter sets out the terms and
conditions  on which I will accept the Offer (as defined in  paragraph 7 of this
undertaking) when it is made.

Shareholdings

1.       I represent and warrant to Amerada Hess that:

(a)      I am the  registered  holder  and  beneficial  owner of the  number  of
         ordinary  shares of 25p each in the capital of Linda shown in Part A of
         the  Schedule  (the "Linda  Shares")  and that I hold these free of any
         lien,  charge,  option,  equity or encumbrance  and free from any third
         party right or interest;

(b)       I am the beneficial owner (but not registered holder) of the number of
          ordinary shares of 25p each in the capital of Linda shown in Part B of
          the Schedule (the  "Beneficial  Shares") and that I hold these free of
          any lien,  charge,  option,  equity or  encumbrance  and free from any
          third party right or interest;

(c)       the information set out in the Schedule  regarding the shares of Linda
          in which I am interested is complete and accurate;

(d)      the Schedule  contains  complete  and accurate  details of all options,
         warrants  and other  rights I may have to  subscribe  for,  purchase or
         otherwise acquire any securities of Linda; and

(e)      I have full  power and  authority  to enter into this  undertaking,  to
         perform the obligations  under it and to accept the Offer in respect of
         the Linda shares.

Dealings

2.        I undertake to Amerada Hess that before the Offer closes, lapses or is
          withdrawn, I shall not:

(a)       sell, transfer,  charge,  encumber, grant any option over or otherwise
          dispose  of any  Linda  Shares or any  Beneficial  Shares or any other
          shares or securities in Linda issued or unconditionally allotted to me
          or otherwise acquired by me before then ("Further Linda Shares") other
          than pursuant to my acceptance of the Offer;

(b)       accept any other offer in respect of the shares or securities referred
          to in paragraph 2(a);

(c)      (other  than  pursuant  to the  Offer)  enter  into  any  agreement  or
         arrangement  or permit any agreement or  arrangement to be entered into
         or incur any obligation or permit any obligation to arise:

             (i)  to do any of the acts referred to in paragraphs 2(a) or 2(b);

            (ii)  in  relation  to, or  operating  by  reference  to,  the Linda
                  Shares, the Beneficial Shares or any Further Linda Shares; or

           (iii)  which, in relation to the Linda Shares,  the Beneficial Shares
                  or any Further Linda Shares, would or might restrict or impede
                  me accepting the Offer,

         and for the avoidance of doubt,  references in this  paragraph  2(c) to
         any  agreement,  arrangement  or  obligation  includes  any  agreement,
         arrangement or obligation  whether or not legally binding or subject to
         any  condition or which is to take effect if the Offer closes or lapses
         or if this  undertaking  ceases to be  binding or  following  any other
         event; or

(d)      save for the acquisition of any further shares in Linda on the exercise
         of options referred to in Part C of the Schedule, I shall not purchase,
         sell or otherwise  deal in any shares or other  securities  of Linda or
         Amerada  Hess  or  any  interest  therein  (including  any  derivatives
         referenced to such securities).

Undertaking to accept the Offer

3.       In  consideration  of Amerada Hess's agreement in paragraph 9.1 to make
         the Offer, I undertake to Amerada Hess that:

(a)      I shall accept the Offer in respect of the Linda  Shares in  accordance
         with  the  procedure  for  acceptance  set out in the  formal  document
         containing  the Offer (the "Offer  Document") not later than seven days
         after Amerada Hess posts the Offer Document to Linda  shareholders  and
         shall  perform the  agreement to which that  acceptance  gives rise, in
         accordance with the relevant provisions of the Offer Document;

(b)      I shall take all action within my power to procure that the  registered
         holder of the  Beneficial  Securities  accepts the Offer in  accordance
         with the  relevant  provisions  of the Offer  Document and performs the
         agreement to which that  acceptance  gives rise, in accordance with the
         relevant provisions of the Offer Document;

(c)      I shall  accept  the Offer in respect of any  Further  Linda  Shares in
         accordance  with the  procedure  for  acceptance  set out in the  Offer
         Document not later than two days after the date I become the registered
         holder of the Further  Linda Shares and shall  perform the agreement to
         which that  acceptance  gives rise,  in  accordance  with the  relevant
         provisons of the Offer Document;

(d)      I shall take all action within my power to procure that the  registered
         holder  of any  further  ordinary  shares in Linda in which I acquire a
         beneficial  interest after the date of this  undertaking but of which I
         do not become  the  registered  holder  ("Further  Beneficial  Shares")
         accepts the offer and performs the  agreement to which that  acceptance
         gives rise in  accordance  with the  relevant  provisions  of the Offer
         Document.

 (e)     I shall not withdraw any  acceptances  of the Offer and shall cause the
         registered   holder(s)  of  any  Beneficial   Shares  and  any  Further
         Beneficial Shares not to do so; and

(f)      pursuant to the Offer,  Amerada Hess will acquire the Linda Shares, the
         Beneficial  Shares and any  Further  Linda  Shares  from me free of any
         lien,  charge,  option,  equity or  encumbrance  and together  with all
         rights of any nature  attaching to those shares  including the right to
         all dividends declared or paid after the date of this undertaking.

Voting Rights

4.1 From the time Amerada Hess announces the Offer to the time the Offer becomes
wholly unconditional, lapses or is withdrawn:

(a)      I shall exercise the votes attaching to my Linda Shares and any Further
         Linda Shares on a Relevant  Resolution  (as defined in  paragraph  4.3)
         only in accordance with Amerada Hess's directions;

(b)      I shall  exercise  the  rights  attaching  to my Linda  Shares  and any
         Further  Linda  Shares to  requisition  or join in  requisitioning  any
         general or class  meeting of Linda for the  purposes of  considering  a
         Relevant  Resolution  and to require  Linda  pursuant  to  section  376
         Companies  Act  1985  to  give  notice  of  such a  resolution  only in
         accordance with Amerada Hess's directions;

(c)      I shall cause the registered holder(s) of any Beneficial Shares and any
         Further Beneficial Shares to comply with paragraphs 4.1(a) and 4.1(b).

4.2  For the  purpose  of  voting  or  causing  votes  to be cast on a  Relevant
Resolution,  I shall  execute  any  form  of  proxy  required  by  Amerada  Hess
appointing  any  person  nominated  by  Amerada  Hess to attend  and vote at the
relevant general meeting of Linda .

4.3      A "Relevant Resolution" means:

(a)      a resolution  (whether or not  amended)  proposed at a general or class
         meeting of Linda, or at an adjourned  meeting,  the passing of which is
         necessary to implement the Offer or which,  if passed,  might result in
         any condition of the Offer not being fulfilled or which might impede or
         frustrate the Offer in any way;

(b)      a  resolution  to  adjourn a general or class  meeting  of Linda  whose
         business  includes the  consideration  of a resolution  falling  within
         paragraph 4.3(a); and

(c)      a resolution to amend a resolution  falling within  paragraph 4.3(a) or
         paragraph 4.3(b).


Documentation
5.1      I consent to:

(a)      the  inclusion  of  references  to me and this  undertaking  in Amerada
         Hess's  announcement  of the Offer (the "Press  Announcement")  as they
         appear in the attached draft of the Press Announcement;

(b)      particulars  of this  undertaking  and my holdings of, and dealings in,
         relevant  securities  of Linda and Amerada  Hess being  included in the
         Offer Document and any other related or ancillary  document as required
         by the Code; and

(c)      this  undertaking  being available for inspection  until the end of the
         offer period (as defined in the Code).

5.2 I shall  promptly  give you all  information  and any  assistance as you may
reasonably require for the preparation of the Offer Document and all related and
ancillary  documents in order to comply with the  requirements  of the Code, the
Financial  Services  Authority and the London Stock Exchange and any other legal
or regulatory  requirement or body. I shall immediately notify you in writing of
any  material  change in the  accuracy or impact of any  information  previously
given to you.

Secrecy

6. I will keep secret the possibility, terms and conditions of the Offer and the
existence and terms of this undertaking until the Press Announcement is released
provided  that I may disclose the same to Linda and its advisers in which case I
will use reasonable  endeavours to ensure that they observe  secrecy in the same
terms.  The  obligations  in this  paragraph  will survive  termination  of this
undertaking.

Interpretation

7. In this undertaking the "Offer" means the offer to be made by or on behalf of
Amerada Hess to acquire  ordinary  shares of 25p each in the capital of Linda on
substantially the terms of the Press  Announcement or on such other terms as may
be agreed  between  Amerada  Hess and Linda or as may be required to comply with
the  requirements  of the Panel on  Takeovers  and Mergers  (the  "Panel"),  the
Financial Services  Authority or the London Stock Exchange.  A reference in this
undertaking to the "Offer" also includes any new, increased,  renewed or revised
offer made by or on behalf of Amerada Hess to acquire shares in Linda,  provided
that the terms of such offer are,  in the  opinion  of  Goldman  Sachs,  no less
favourable to acceptors than the terms set out in the Press Announcement.

Time of the Essence

8. Any time,  date or period  mentioned in this  undertaking  may be extended by
mutual agreement but as regards any time, date or period  originally fixed or as
extended, time shall be of the essence.

The Offer

9.1 Subject to paragraph 9.2, Amerada Hess agrees to make the Offer if the Press
Announcement is published,  with Amerada Hess's prior approval, in substantially
the form attached (or in such other form as may be agreed  between  Amerada Hess
and LASMO or as may be required to comply with the  requirements of the Panel on
Takeovers and Mergers (the "Panel")) by not later than 8 November 2000. Approval
of  the  release  of  the  Press  Announcement  is at  Amerada  Hess's  absolute
discretion.

9.2 Amerada Hess will not be obliged to make or proceed with the Offer if, after
the Press Announcement is published:

(a)      the Panel consents to Amerada Hess not proceeding with the Offer; or

(b)      Amerada Hess is no longer  required by the City Code of  Takeovers  and
         Mergers (the "Code") to proceed with the Offer.

9.3  Amerada  Hess  shall  have no  liability  to me for any  failure to make or
implement the Offer and I will not be entitled to specific performance of Clause
9.1 if, in each case,  Amerada Hess has become  aware that any  condition of the
Offer  as set out in the  Press  Announcement  has  become  incapable  of  being
fulfilled.

9.4      My obligations under this agreement will lapse if:

(a)      the Press Announcement is not released on 8 November 2000; or

(b)      the  Offer  is not  made  in any of the  circumstances  referred  to in
         paragraph 9.2,

and in these  circumstances  neither party will have any claim against the other
except in respect of any prior breach.

If the undertaking lapses, I shall have no claim against Amerada Hess.

Director's undertakings

10.1 As a director  of Linda,  I shall use my best  endeavours  to procure  that
Linda and the board of directors of Linda:

(a)      provide all assistance which Amerada Hess reasonably requests to enable
         it to  prepare  the  Offer  Document  and  all  related  and  ancillary
         documents in accordance with the requirements of the Code, the SEC, the
         Financial  Services  Authority  and the London  Stock  Exchange and any
         other legal or regulatory requirement or body;

(b)      provide  all  assistance  which  Amerada  Hess  reasonably  requests to
         Amerada Hess as may be required to obtain the  clearances  and consents
         referred to in the Press Announcement;

(c)      if the Offer becomes  unconditional  in all respects,  promptly approve
         the  appointment as  director(s)  of Linda of the persons  nominated by
         Amerada  Hess and,  if required by Amerada  Hess,  I shall  resign as a
         director of Linda ;

(d)      agree to any  extension  of time limits in the Code for posting of this
         Offer which Amerada Hess requests and which the Panel approves; and

(e)      not make (and that no-one makes on behalf of Linda):

             (i)  any  announcement  before the Press  Announcement  is released
                  which refers expressly or implicitly to Amerada Hess; or

            (ii)  any other  announcement  in connection  with the Offer without
                  prior consultation with Amerada Hess,

         unless Amerada Hess consents in writing or the relevant announcement is
         required by law or any regulatory provision.

10.2     I shall:

(a)      not directly or  indirectly  solicit any person other than Amerada Hess
         to propose or announce  any offer for or any scheme of  arrangement  in
         respect of any shares or other securities of Linda; or

(b)      not directly or indirectly  initiate any  discussions  with, or provide
         any information  to, any person who is or may be considering  proposing
         or announcing such an offer or scheme; or

(c)      recommend acceptance of the Offer to Linda shareholders and not modify,
         qualify or withdraw that  recommendation at any time, except insofar as
         to do so would be inconsistent with my duties as a Director of LASMO.

10.3 I shall promptly inform you of any approach by a third party which may lead
to an offer for Linda or the occurrence of any matter referred to above and will
keep you  fully  informed  of the same  (but  not of the  value of the  relevant
proposal or the identity of its proponent).

10.4 I confirm  that I know of no matter or  circumstance  which might mean that
any  condition  of the  Offer  set  out  in the  Press  Announcement  cannot  be
fulfilled.  I will  have  no  liability  to  Amerada  Hess  in  respect  of this
confirmation.

Confirmation

11. I confirm that in signing  this letter I am not a customer of Goldman  Sachs
for the purposes of the Rules of The Securities  and Futures  Authority and that
Goldman Sachs does not owe me any of the duties which it owes to its  customers.
I confirm that I have had an adequate  opportunity to consider whether or not to
give this undertaking and to obtain independent advice.

Power of Attorney

12.1  In  order  to  secure  the  performance  of  my  obligations   under  this
undertaking, I appoint any director of Amerada Hess as my attorney:

(a)      if I fail to accept or to procure acceptance of the Offer in accordance
         with  paragraphs  3(a),  3(b) or 3(c) or if I fail to accept  the offer
         referred to in paragraph 3(d) in accordance with that paragraph,  in my
         name and on my behalf to do all  things  and to  execute  all deeds and
         other  documents as may be necessary or desirable to accept such offers
         in respect of the Linda  Shares,  the  Beneficial  Shares,  any Further
         Linda  Shares  and  the  options  referred  to in  paragraph  3(d)  (as
         appropriate); and

(b)      to execute any form of proxy  required by Amerada Hess  appointing  any
         person  nominated  by  Amerada  Hess to attend  and vote on a  Relevant
         Resolution (as defined in paragraph 4.3) at a general meeting of Linda.

12.2 I agree  that this power of  attorney  is given by way of  security  and is
irrevocable  in accordance  with section 4 Powers of Attorney Act 1971 until the
Offer closes, lapses or is withdrawn.

Specific Performance

13. I agree  that,  if I fail to  accept  the  Offer  in  accordance  with  this
undertaking  or breach any of my  obligations,  damages would not be an adequate
remedy and accordingly  Amerada Hess shall be entitled to the remedy of specific
performance.

14.      General

14.1 The obligations I have accepted under this agreement are without  prejudice
to any  rights  of  Amerada  Hess or  Goldman  Sachs at  common  law or  equity.
Invalidity  of any  provision  of this  agreement  will  not  affect  any  other
provision.

14.2 Any  failure  or delay by any  person in  exercising  any  right,  power or
privilege  under  this  agreement  will not  comprise  a waiver  and a single or
partial exercise will not restrict any further exercise.

14.3 This  agreement is governed by and is to be construed  in  accordance  with
English law and each of the parties submits to the exclusive jurisdiction of the
English courts for all purposes in connection with this agreement.





                                    SCHEDULE

                                 Existing Shares

PART A - Registered Holdings of Linda Ordinary Shares

Registered Holder                                           Ordinary Shares of
                                                            25p each

(Print name of giver of
undertaking)
HUGH EDWARD NORTON                                                  12,442

PART B - Beneficial Holdings of Linda Ordinary Shares

Beneficial Owner                                            Ordinary Shares of
                                                            25p each

(Print name)
- -------------------------


PART C -  Options  and other  rights  to  acquire  Linda  securities  (including
options)

Holder                                                      Type of option
(Print name)
NONE





SIGNED and DELIVERED as a DEED by......................................


Yours faithfully,


Signature:        HUGH NORTON

Name:             HUGH NORTON

in the presence of:

Signature of witness:      FJ HARCUP

Name:                      FJ HARCUP

Address:          1A Portland Road
                  London  W11 4LH


                                                                      EXHIBIT 10
To:      Amerada Hess Corporation plc ("Amerada Hess")

and      Goldman Sachs International ("Goldman Sachs")


                                                                 6 November 2000


Dear Sirs,

I  understand  that  Amerada  Hess  intends to make an offer to acquire  all the
issued ordinary share capital of Linda plc ("Linda")  substantially on the terms
of the  attached  draft press  announcement.  This letter sets out the terms and
conditions  on which I will accept the Offer (as defined in  paragraph 7 of this
undertaking) when it is made.

Shareholdings

1.       I represent and warrant to Amerada Hess that:

(a)      I am the  registered  holder  and  beneficial  owner of the  number  of
         ordinary  shares of 25p each in the capital of Linda shown in Part A of
         the  Schedule  (the "Linda  Shares")  and that I hold these free of any
         lien,  charge,  option,  equity or encumbrance  and free from any third
         party right or interest;

(b)      I am the beneficial owner (but not registered  holder) of the number of
         ordinary  shares of 25p each in the capital of Linda shown in Part B of
         the Schedule  (the  "Beneficial  Shares") and that I hold these free of
         any lien, charge, option, equity or encumbrance and free from any third
         party right or interest;

(c)      the information  set out in the Schedule  regarding the shares of Linda
         in which I am interested is complete and accurate;

(d)      the Schedule  contains  complete  and accurate  details of all options,
         warrants  and other  rights I may have to  subscribe  for,  purchase or
         otherwise acquire any securities of Linda; and

(e)      I have full  power and  authority  to enter into this  undertaking,  to
         perform the obligations  under it and to accept the Offer in respect of
         the Linda shares.

Dealings

2.       I undertake to Amerada Hess that before the Offer closes,  lapses or is
         withdrawn, I shall not:

(a)      sell, transfer,  charge,  encumber,  grant any option over or otherwise
         dispose  of any  Linda  Shares  or any  Beneficial  Shares or any other
         shares or securities in Linda issued or unconditionally  allotted to me
         or otherwise  acquired by me before then ("Further Linda Shares") other
         than pursuant to my acceptance of the Offer;

(b)      accept any other offer in respect of the shares or securities  referred
         to in paragraph 2(a);

(c)      (other  than  pursuant  to the  Offer)  enter  into  any  agreement  or
         arrangement  or permit any agreement or  arrangement to be entered into
         or incur any obligation or permit any obligation to arise:

             (i)  to do any of the acts referred to in paragraphs 2(a) or 2(b);

            (ii)  in  relation  to, or  operating  by  reference  to,  the Linda
                  Shares, the Beneficial Shares or any Further Linda Shares; or

           (iii)  which, in relation to the Linda Shares,  the Beneficial Shares
                  or any Further Linda Shares, would or might restrict or impede
                  me accepting the Offer,

         and for the avoidance of doubt,  references in this  paragraph  2(c) to
         any  agreement,  arrangement  or  obligation  includes  any  agreement,
         arrangement or obligation  whether or not legally binding or subject to
         any  condition or which is to take effect if the Offer closes or lapses
         or if this  undertaking  ceases to be  binding or  following  any other
         event; or

(d)      save for the acquisition of any further shares in Linda on the exercise
         of options referred to in Part C of the Schedule, I shall not purchase,
         sell or otherwise  deal in any shares or other  securities  of Linda or
         Amerada  Hess  or  any  interest  therein  (including  any  derivatives
         referenced to such securities).

Undertaking to accept the Offer

3.       In  consideration  of Amerada Hess's agreement in paragraph 9.1 to make
         the Offer, I undertake to Amerada Hess that:

(a)      I shall accept the Offer in respect of the Linda  Shares in  accordance
         with  the  procedure  for  acceptance  set out in the  formal  document
         containing  the Offer (the "Offer  Document") not later than seven days
         after Amerada Hess posts the Offer Document to Linda  shareholders  and
         shall  perform the  agreement to which that  acceptance  gives rise, in
         accordance with the relevant provisions of the Offer Document;

(b)      I shall take all action within my power to procure that the  registered
         holder of the  Beneficial  Securities  accepts the Offer in  accordance
         with the  relevant  provisions  of the Offer  Document and performs the
         agreement to which that  acceptance  gives rise, in accordance with the
         relevant provisions of the Offer Document;

(c)      I shall  accept  the Offer in respect of any  Further  Linda  Shares in
         accordance  with the  procedure  for  acceptance  set out in the  Offer
         Document not later than two days after the date I become the registered
         holder of the Further  Linda Shares and shall  perform the agreement to
         which that  acceptance  gives rise,  in  accordance  with the  relevant
         provisons of the Offer Document;

(d)      I shall take all action within my power to procure that the  registered
         holder  of any  further  ordinary  shares in Linda in which I acquire a
         beneficial  interest after the date of this  undertaking but of which I
         do not become  the  registered  holder  ("Further  Beneficial  Shares")
         accepts the offer and performs the  agreement to which that  acceptance
         gives rise in  accordance  with the  relevant  provisions  of the Offer
         Document.

(e)      I shall not withdraw any  acceptances  of the Offer and shall cause the
         registered   holder(s)  of  any  Beneficial   Shares  and  any  Further
         Beneficial Shares not to do so; and

(f)      pursuant to the Offer,  Amerada Hess will acquire the Linda Shares, the
         Beneficial  Shares and any  Further  Linda  Shares  from me free of any
         lien,  charge,  option,  equity or  encumbrance  and together  with all
         rights of any nature  attaching to those shares  including the right to
         all dividends declared or paid after the date of this undertaking.

Voting Rights

4.1 From the time Amerada Hess announces the Offer to the time the Offer becomes
wholly unconditional, lapses or is withdrawn:

(a)      I shall exercise the votes attaching to my Linda Shares and any Further
         Linda Shares on a Relevant  Resolution  (as defined in  paragraph  4.3)
         only in accordance with Amerada Hess's directions;

(b)      I shall  exercise  the  rights  attaching  to my Linda  Shares  and any
         Further  Linda  Shares to  requisition  or join in  requisitioning  any
         general or class  meeting of Linda for the  purposes of  considering  a
         Relevant  Resolution  and to require  Linda  pursuant  to  section  376
         Companies  Act  1985  to  give  notice  of  such a  resolution  only in
         accordance with Amerada Hess's directions;

(c)      I shall cause the registered holder(s) of any Beneficial Shares and any
         Further Beneficial Shares to comply with paragraphs 4.1(a) and 4.1(b).

4.2  For the  purpose  of  voting  or  causing  votes  to be cast on a  Relevant
Resolution,  I shall  execute  any  form  of  proxy  required  by  Amerada  Hess
appointing  any  person  nominated  by  Amerada  Hess to attend  and vote at the
relevant general meeting of Linda .

4.3      A "Relevant Resolution" means:

(a)      a resolution  (whether or not  amended)  proposed at a general or class
         meeting of Linda, or at an adjourned  meeting,  the passing of which is
         necessary to implement the Offer or which,  if passed,  might result in
         any condition of the Offer not being fulfilled or which might impede or
         frustrate the Offer in any way;

(b)      a  resolution  to  adjourn a general or class  meeting  of Linda  whose
         business  includes the  consideration  of a resolution  falling  within
         paragraph 4.3(a); and

(c)      a resolution to amend a resolution  falling within  paragraph 4.3(a) or
         paragraph 4.3(b).


Documentation
5.1      I consent to:

(a)      the  inclusion  of  references  to me and this  undertaking  in Amerada
         Hess's  announcement  of the Offer (the "Press  Announcement")  as they
         appear in the attached draft of the Press Announcement;

(b)      particulars  of this  undertaking  and my holdings of, and dealings in,
         relevant  securities  of Linda and Amerada  Hess being  included in the
         Offer Document and any other related or ancillary  document as required
         by the Code; and

(c)      this  undertaking  being available for inspection  until the end of the
         offer period (as defined in the Code).

5.2 I shall  promptly  give you all  information  and any  assistance as you may
reasonably require for the preparation of the Offer Document and all related and
ancillary  documents in order to comply with the  requirements  of the Code, the
Financial  Services  Authority and the London Stock Exchange and any other legal
or regulatory  requirement or body. I shall immediately notify you in writing of
any  material  change in the  accuracy or impact of any  information  previously
given to you.

Secrecy

6. I will keep secret the possibility, terms and conditions of the Offer and the
existence and terms of this undertaking until the Press Announcement is released
provided  that I may disclose the same to Linda and its advisers in which case I
will use reasonable  endeavours to ensure that they observe  secrecy in the same
terms.  The  obligations  in this  paragraph  will survive  termination  of this
undertaking.

Interpretation

7. In this undertaking the "Offer" means the offer to be made by or on behalf of
Amerada Hess to acquire  ordinary  shares of 25p each in the capital of Linda on
substantially the terms of the Press  Announcement or on such other terms as may
be agreed  between  Amerada  Hess and Linda or as may be required to comply with
the  requirements  of the Panel on  Takeovers  and Mergers  (the  "Panel"),  the
Financial Services  Authority or the London Stock Exchange.  A reference in this
undertaking to the "Offer" also includes any new, increased,  renewed or revised
offer made by or on behalf of Amerada Hess to acquire shares in Linda,  provided
that the terms of such offer are,  in the  opinion  of  Goldman  Sachs,  no less
favourable to acceptors than the terms set out in the Press Announcement.

Time of the Essence

8. Any time,  date or period  mentioned in this  undertaking  may be extended by
mutual agreement but as regards any time, date or period  originally fixed or as
extended, time shall be of the essence.

The Offer

9.1 Subject to paragraph 9.2, Amerada Hess agrees to make the Offer if the Press
Announcement is published,  with Amerada Hess's prior approval, in substantially
the form attached (or in such other form as may be agreed  between  Amerada Hess
and LASMO or as may be required to comply with the  requirements of the Panel on
Takeovers and Mergers (the "Panel")) by not later than 8 November 2000. Approval
of  the  release  of  the  Press  Announcement  is at  Amerada  Hess's  absolute
discretion.

9.2 Amerada Hess will not be obliged to make or proceed with the Offer if, after
the Press Announcement is published:

(a)      the Panel consents to Amerada Hess not proceeding with the Offer; or

(b)      Amerada Hess is no longer  required by the City Code of  Takeovers  and
         Mergers (the "Code") to proceed with the Offer.

9.3  Amerada  Hess  shall  have no  liability  to me for any  failure to make or
implement the Offer and I will not be entitled to specific performance of Clause
9.1 if, in each case,  Amerada Hess has become  aware that any  condition of the
Offer  as set out in the  Press  Announcement  has  become  incapable  of  being
fulfilled.

9.4      My obligations under this agreement will lapse if:

(a)      the Press Announcement is not released on 8 November 2000; or

(b)      the  Offer  is not  made  in any of the  circumstances  referred  to in
         paragraph 9.2,

and in these  circumstances  neither party will have any claim against the other
except in respect of any prior breach.

If the undertaking lapses, I shall have no claim against Amerada Hess.

Director's undertakings

10.1 As a director  of Linda,  I shall use my best  endeavours  to procure  that
Linda and the board of directors of Linda:

(a)      provide all assistance which Amerada Hess reasonably requests to enable
         it to  prepare  the  Offer  Document  and  all  related  and  ancillary
         documents in accordance with the requirements of the Code, the SEC, the
         Financial  Services  Authority  and the London  Stock  Exchange and any
         other legal or regulatory requirement or body;

(b)      provide  all  assistance  which  Amerada  Hess  reasonably  requests to
         Amerada Hess as may be required to obtain the  clearances  and consents
         referred to in the Press Announcement;

(c)      if the Offer becomes  unconditional  in all respects,  promptly approve
         the  appointment as  director(s)  of Linda of the persons  nominated by
         Amerada  Hess and,  if required by Amerada  Hess,  I shall  resign as a
         director of Linda ;

(d)      agree to any  extension  of time limits in the Code for posting of this
         Offer which Amerada Hess requests and which the Panel approves; and

(e)      not make (and that no-one makes on behalf of Linda):

             (i)  any  announcement  before the Press  Announcement  is released
                  which refers expressly or implicitly to Amerada Hess; or

            (ii)  any other  announcement  in connection  with the Offer without
                  prior consultation with Amerada Hess,

         unless Amerada Hess consents in writing or the relevant announcement is
         required by law or any regulatory provision.

10.2     I shall:

(a)      not directly or  indirectly  solicit any person other than Amerada Hess
         to propose or announce  any offer for or any scheme of  arrangement  in
         respect of any shares or other securities of Linda; or

(b)      not directly or indirectly  initiate any  discussions  with, or provide
         any information  to, any person who is or may be considering  proposing
         or announcing such an offer or scheme; or

(c)      recommend acceptance of the Offer to Linda shareholders and not modify,
         qualify or withdraw that  recommendation at any time, except insofar as
         to do so would be inconsistent with my duties as a Director of LASMO.

10.3 I shall promptly inform you of any approach by a third party which may lead
to an offer for Linda or the occurrence of any matter referred to above and will
keep you  fully  informed  of the same  (but  not of the  value of the  relevant
proposal or the identity of its proponent).

10.4 I confirm  that I know of no matter or  circumstance  which might mean that
any  condition  of the  Offer  set  out  in the  Press  Announcement  cannot  be
fulfilled.  I will  have  no  liability  to  Amerada  Hess  in  respect  of this
confirmation.

Confirmation

11. I confirm that in signing  this letter I am not a customer of Goldman  Sachs
for the purposes of the Rules of The Securities  and Futures  Authority and that
Goldman Sachs does not owe me any of the duties which it owes to its  customers.
I confirm that I have had an adequate  opportunity to consider whether or not to
give this undertaking and to obtain independent advice.

Power of Attorney

12.1  In  order  to  secure  the  performance  of  my  obligations   under  this
undertaking, I appoint any director of Amerada Hess as my attorney:

(a)      if I fail to accept or to procure acceptance of the Offer in accordance
         with  paragraphs  3(a),  3(b) or 3(c) or if I fail to accept  the offer
         referred to in paragraph 3(d) in accordance with that paragraph,  in my
         name and on my behalf to do all  things  and to  execute  all deeds and
         other  documents as may be necessary or desirable to accept such offers
         in respect of the Linda  Shares,  the  Beneficial  Shares,  any Further
         Linda  Shares  and  the  options  referred  to in  paragraph  3(d)  (as
         appropriate); and

(b)      to execute any form of proxy  required by Amerada Hess  appointing  any
         person  nominated  by  Amerada  Hess to attend  and vote on a  Relevant
         Resolution (as defined in paragraph 4.3) at a general meeting of Linda.

12.2 I agree  that this power of  attorney  is given by way of  security  and is
irrevocable  in accordance  with section 4 Powers of Attorney Act 1971 until the
Offer closes, lapses or is withdrawn.

Specific Performance

13. I agree  that,  if I fail to  accept  the  Offer  in  accordance  with  this
undertaking  or breach any of my  obligations,  damages would not be an adequate
remedy and accordingly  Amerada Hess shall be entitled to the remedy of specific
performance.

14.      General

14.1 The obligations I have accepted under this agreement are without  prejudice
to any  rights  of  Amerada  Hess or  Goldman  Sachs at  common  law or  equity.
Invalidity  of any  provision  of this  agreement  will  not  affect  any  other
provision.

14.2 Any  failure  or delay by any  person in  exercising  any  right,  power or
privilege  under  this  agreement  will not  comprise  a waiver  and a single or
partial exercise will not restrict any further exercise.

14.3 This  agreement is governed by and is to be construed  in  accordance  with
English law and each of the parties submits to the exclusive jurisdiction of the
English courts for all purposes in connection with this agreement.





                                    SCHEDULE

                                 Existing Shares

PART A - Registered Holdings of Linda Ordinary Shares

Registered Holder                                           Ordinary Shares of
                                                            25p each

(Print name of giver of
undertaking)
- -------------------------

PART B - Beneficial Holdings of Linda Ordinary Shares

Beneficial Owner                                            Ordinary Shares of
                                                            25p each

(Print name)
ANTONY PEVERELL HICHENS                                     43,122


PART C -  Options  and other  rights  to  acquire  Linda  securities  (including
options)

Holder                                                      Type of option
(Print name)
- -----------------------





SIGNED and DELIVERED as a DEED by......................................


Yours faithfully,


Signature:                 ANTONY PEVERELL HICHENS

Name:                      ANTONY PEVERELL HICHENS

in the presence of:

Signature of witness:      AO BRIEN

Name                       AO BRIEN

Address           101 Bishopsgate
                  London  EC2M 3YH
                  Solicitor




                                                                      EXHIBIT 11
The Directors
LASMO plc ("LASMO" or the "Company")
101 Bishopsgate
London EC2M 3XH

6 November 2000



STRICTLY PRIVATE & CONFIDENTIAL

Dear Sirs

We refer to our  discussions  concerning  the proposed offer (the "Offer") by us
for the ordinary shares in the capital of LASMO (the "Shares").

1.1 Subject to paragraph 1.2, Amerada Hess agrees to make the Offer if the Press
Announcement  is published by not later than 8 November 2000 with Amerada Hess's
prior approval, in substantially the form attached (or in such other form as may
be agreed  between  Amerada  Hess and LASMO or as may be required to comply with
the requirements of the Panel on Takeovers and Mergers (the "Panel")).  Approval
of  the  release  of  the  Press  Announcement  is at  Amerada  Hess's  absolute
discretion.

1.2 Amerada Hess will not be obliged to make or proceed with the Offer if, after
the Press Announcement is published:

(a)      the Panel consents to Amerada Hess not proceeding with the Offer; or

(b)      Amerada Hess is no longer  required by the City Code on  Takeovers  and
         Mergers (the "Code") to proceed with the Offer.

1.3  Amerada  Hess shall have no  liability  to LASMO for any failure to make or
implement  the Offer and LASMO will not be entitled to specific  performance  of
Clause 1.1, if, in each case,  Amerada Hess has become aware that any  condition
of the Offer as set out in the Press  Announcement has become incapable of being
fulfilled.

1.4      The obligations of LASMO under this agreement will lapse if:

(a)      the Press Announcement is not released on 8 November 2000; or

(b)      the  Offer  is not  made  in any of the  circumstances  referred  to in
         paragraph 1.2,

and in those  circumstances  neither party will have any claim against the other
in respect of any prior breach.

1.5 LASMO  confirms to Amerada Hess that it will agree to any  extension of time
limits for posting the Offer in the Code which  Amerada  Hess  approves  and the
Panel approves, or would approve if LASMO so agreed.

Exclusivity

2.1 LASMO agrees that it will not, and will procure that none of its  subsidiary
undertakings (or any of its or their respective directors,  employees, advisers,
agents or representatives acting in that capacity) will, directly or indirectly:

(a)      solicit  or  initiate  the  submission  of  proposals,  indications  of
         interest  or  offers  of any kind from any  person  (other  than us) in
         relation  to any offer,  scheme,  merger or  business  combination,  or
         similar  transaction or  arrangement  which results in the ownership of
         all or a significant proportion of the Shares passing to any person (an
         "Alternative Proposal"); or

(b)      initiate any discussions or negotiations with any person in relation to
         any Alternative Proposal.

2.2 This Clause 2 will not prevent LASMO responding to any Alternative  Proposal
from any third party if LASMO has complied at all times with Clause 2.1 and each
of its  Directors  and its Rule 3 advisers  have complied with the terms of that
Clause as if they were bound by it directly. If information about the affairs of
LASMO  or any of its  subsidiary  undertakings  is given  to  another  potential
offeror, LASMO will provide the same information to us promptly.

3.  LASMO  will  promptly  (but not  more  than 24 hours  after  receipt  of any
Alternative  Proposal),  notify Amerada Hess of (a) any Alternative  Proposal of
which it or any of its officers  becomes aware (b) any indication of which it or
any of its  officers  becomes  aware  that any person is  considering  making an
Alternative Proposal,  and LASMO will at all times keep Amerada Hess informed of
the status of any such  Alternative  Proposal.  This  Clause 3 will not  require
disclosure  of the terms of any  Alternative  Proposal  or the  identity  of its
proponent.

4.  LASMO  confirms  that  neither  it nor any of its  officers  nor its  Rule 3
advisers have previously  engaged in discussions  which have not been terminated
with respect to an Alternative Proposal.

5.1 LASMO's  obligations under Clauses 1 to 4 will terminate if the Announcement
in relation to the Offer is not made prior to midnight on 8 November 2000.

5.2 LASMO's  obligations  under Clauses 1 to 4 following the  Announcement  will
terminate if, once made, the Offer lapses or is withdrawn.

Inducement Fee

6.1 Amerada Hess shall be entitled to payment of a sum  calculated in accordance
with Clause 5.2 if:

(a)      a Trigger  Event occurs and, at any time prior to the end of the fourth
         month following the end of the Relevant Period, any person announces an
         intention (whether or not subject to any pre-condition) to implement an
         Alternative   Proposal  and  that  person  consummates  an  Alternative
         Proposal (whether or not in the form announced) at any time during 2001
         (for this purpose  "Alternative  Proposal"  includes an  acquisition or
         disposal  of  a  material  asset  being  one  with  a  value  exceeding
         (pound)100 million); or

(b)      during  the  Relevant  Period,  the  directors  of  LASMO  (i)  fail to
         recommend  unanimously LASMO  Shareholders to accept the Offer; or (ii)
         withdraw   any  such   recommendation,   or  (iii)   qualify  any  such
         recommendation in a manner not previously  approved by Amerada Hess (in
         each case  irrespective  of whether they could continue to recommend in
         good faith or in accordance with their duties); or

(c)      during the Relevant Period,  LASMO or any of its directors  voluntarily
         authorises or directs any action or omission  which will give rise to a
         breach of this  agreement  by LASMO or prevent a condition to the Offer
         being  satisfied  in  either  case in a way  which is  material  in the
         context of the Wider LASMO Group (as defined in the press  announcement
         to be issued in connection with the Offer) or which otherwise  requires
         LASMO shareholders' approval under the Takeover Code.

For these purposes, a "Trigger Event" will occur if during the Relevant Period:

(a)      any person makes public an interest in making, or an intention to make,
         an Alternative Proposal; or

(b)      any person  together  with any person acting in concert with it (within
         the meaning of the City Code)  acquires  or agrees to acquire,  whether
         subject to  conditions,  pre-conditions  or  otherwise,  shares  and/or
         rights  over  shares (as defined in the City Code) as a result of which
         such  persons  hold shares or rights over shares  carrying in aggregate
         more than 10% of the voting rights  exercisable at general  meetings of
         LASMO;

For these purposes and for the purposes of Clause 7 below, the "Relevant Period"
is the period from the date of this  Agreement  until the Offer  lapses or it is
announced  that  the  Offer  will  not be made  or is  withdrawn  (whichever  is
earlier).

6.2      The amount payable by LASMO under Clause 6.1 shall be:

(a)      one per cent. of the amount that results from multiplying 180 pence per
         Company  ordinary share by the number of issued  ordinary shares in the
         capital of LASMO as at the date of this Agreement; or

(b)      if it is less than the  amount  specified  in  sub-paragraph  (a),  the
         maximum  amount  which,  if deducted from the net assets of LASMO as at
         the date of this Agreement,  would not reduce them to a material extent
         (all such expressions  being interpreted in accordance with Section 152
         of the Companies Act 1985); or

(c)      if it is less than the  amount  specified  in  sub-paragraph  (b),  the
         largest  amount in respect of which the  commitment  of LASMO in Clause
         6.1 can lawfully be given.

Such  amount,  once  it has  become  payable,  will be  paid  by  LASMO  without
deduction, set-off or counterclaim within five business days following a written
notice of demand for payment by Amerada Hess.

LASMO Holdings

7.1      LASMO confirms to Amerada Hess that:

(a)      Methodplan  Ltd,  registered  in England with company  number  2642814,
         ("Methodplan") is a wholly owned subsidiary of LASMO;

(b)      at the date hereof  Methodplan is the beneficial owner of not less than
         8,458,007  ordinary  shares in the  capital of LASMO  (the  "Methodplan
         Shares"),  which are fully paid and held free from all liens, equities,
         charges, encumbrances and other interests;

(c)      no other  subsidiary of LASMO is the legal or  beneficial  owner of any
         ordinary shares of LASMO; and

(d)      in  connection  with the LASMO  Share  Option  Scheme  dated  1984 (the
         "Executive  Scheme"),  the  Monument  Share  Option  Scheme,  the LASMO
         International  Plan and the Monument  Oil and Gas Share  Option  Scheme
         dated 1987, the Methodplan  Shares may, lawfully and in accordance with
         the terms of the Executive  Scheme,  be used to satisfy the exercise of
         share options granted to employees of LASMO and its subsidiaries.

7.2 Except as provided in Clause 7.4 or as previously  approved by Amerada Hess,
LASMO will procure that during the Relevant  Period,  Methodplan  will not sell,
transfer,  charge,  encumber,  grant any right over or otherwise  dispose of any
Methodplan  Shares  (including  pursuant to the Offer) and shall not acquire any
further Shares.

7.3 LASMO will procure that  Methodplan will accept the Offer in respect of such
number of shares (not exceeding its holding) as Amerada Hess may direct no later
than  five  London  Stock  Exchange  dealing  days  after  the date of the Offer
Document  and,  if a mix and match  election  is  available,  will elect for the
maximum  amount of additional  cash  available (or such lesser amount of cash as
Amerada Hess may direct).

7.4(a)   Insofar as options are exercised after the date of this agreement:

             (i)  under the Executive  Scheme and in respect of approved options
                  under the  Monument  1996  Share  Option  Scheme,  LASMO  will
                  procure  that such  exercises  are  satisfied,  as directed by
                  Amerada  Hess,  by the  transfer  of the  shares  held  by the
                  trustee of the LASMO  Employee Share Trust,  if lawful,  or by
                  the  lawful   transfer   of  shares   beneficially   owned  by
                  Methodplan.

            (ii)  under  the  LASMO  International  Share  Option  Plan  or  the
                  Monument  Oil and Gas Share  Option  Scheme  dated 1987 or the
                  Monument  1996 Share  Option  Scheme (in the latter case as to
                  the exercise of  unapproved  share options  only),  LASMO will
                  ensure  that  such  exercises  are  satisfied  in  cash by the
                  payment of the amount required under the relevant  schemes or,
                  to the extent directed by Amerada Hess, by the lawful transfer
                  of shares beneficially owned by Methodplan.

(b)      Insofar as entitlements  arise under the LASMO Equity Plan,  LASMO will
         ensure  that they are  satisfied  in cash by the  payment of the amount
         required under the relevant schemes.

(c)      The Company  confirms  to Amerada  Hess that it will not  exercise  its
         discretion to satisfy  entitlements  under the LASMO Share Appreciation
         Rights Plan by issuing or procuring the transfer of any Shares.

Other Share Issues and Dividends

8.1 LASMO confirms to Amerada Hess that the  information in Appendix A regarding
the share  capital of LASMO and the rights of the  holders of options  and other
entitlements  to require the  allotment or transfer of any shares in the capital
of LASMO  (or any  interest  therein)  is  accurate  and not  misleading  in all
material respects and that there are no other entitlement not so shown.

8.2 LASMO agrees that,  unless the Offer has lapsed or been  withdrawn,  it will
not and it will procure that none of its subsidiaries  will (except as agreed by
Amerada Hess prior to the date of this Agreement):

(a)      make any further awards or grant any further options or entitlements to
         Shares under any of the Executive Scheme, the LASMO International Share
         Option Plan,  the Monument 1996 Share Option  Scheme,  the Monument Oil
         and Gas Share  Option  Scheme  dated  1987,  the LASMO SAYE Plan or the
         LASMO Equity Plan  (together the "Schemes") or any other scheme or plan
         or  otherwise  or grant any other  rights to any person to require  the
         allotment or transfer of any Shares (or any interest therein); or

(b)      grant any  additional  remuneration  or benefits  (or any  entitlements
         thereto) to any of its senior executives.

8.3 Without  limiting  Clause 8.2,  LASMO agrees that it will not allot or issue
any further  share  capital  except as  required by the Schemes  until the Offer
shall have lapsed.

8.4 LASMO agrees that,  unless the Offer has lapsed or been  withdrawn,  it will
not  recommend,  declare,  pay or make or propose  any bonus,  dividend or other
distribution.

Further Assurance
9.1 Save to the extent that to do so would  constitute a breach of the duties of
its  directors  imposed on them by virtue of holding that  office,  LASMO agrees
that it shall take or cause to be taken all such reasonable  steps as are within
its power and necessary to assist  Amerada Hess in the  preparation of necessary
regulatory notices,  applications and filings,  obtaining necessary consents and
authorisations and providing the necessary information to enable Amerada Hess to
prepare a Form S-4 registration  statement and offer document in accordance with
the Takeover Code and other documentation required in connection with the Offer.

9.2 LASMO will cooperate with Amerada Hess in ascertaining  the  entitlements of
employees under each of the Schemes,  including,  without limitation,  providing
promptly on request (i) all information  reasonably requested by Amerada Hess on
the number of Shares the subject of entitlements under each of the Schemes, (ii)
any  documentation  relevant to the entitlements of employees under the Schemes,
and (iii) details of exercises of shares options as they occur.

The terms of this letter shall be governed by and interpreted in accordance with
English  law and the courts of England  are to have  exclusive  jurisdiction  in
respect of any disputes relating to it.

If you agree to the above terms,  please  indicate your agreement by signing and
returning a copy of this letter.

Yours faithfully

J.B. HESS

for and on behalf of Amerada Hess



We confirm  that we agree and  accept the terms of this  letter and intend to be
legally bound by its terms

PAUL MURRAY
for and on behalf of LASMO plc

Dated  ____ November 2000






                                   Appendix A
Part 1. LASMO Executive Option Scheme - ----------------------------------------------------------------------------------------------------------------------------------- Number Number which can be Number which can be Number which must be satisfied in cash satisfied by satisfied by new compulsorily existing shares issue of shares - ----------------------------------------------------------------------------------------------------------------------------------- Maximum number of options 4,100,465 Nil 4,100,465 Nil exercisable or capable of exercise on a change of control from the date hereof until 30/6/2001 - ----------------------------------------------------------------------------------------------------------------------------------- Maximum number of options 3,421,808 Nil 3,421,808 Nil exercisable or capable of exercise on a change of control where the offer value is between 140p and 220p from the date hereof until 30/6/2001 - -----------------------------------------------------------------------------------------------------------------------------------
Part 2. LASMO International Plan - ------------------------------------------------------------------------------------------------------------------------------------ Number Number which can Number which can be Number which must be be satisfied satisfied by satisfied by new in cash compulsorily existing shares issue of shares - -------------------------------------------------------------------------------------------- -------------------------------------- Maximum number of options 6,866,732 6,866,732 6,866,732 Nil exercisable or capable of exercise on a change of control from the date hereof until 30/6/2001 - ------------------------------------------------------------------------------------------------------------------------------------ Maximum number of options 6,013,032 6,013,032 6,013,032 Nil exercisable or capable of exercise on a change of control where the offer value is between 140p and 220p from the date hereof until 30/6/2001 - ------------------------------------------------------------------------------------------------------------------------------------
Part 3. Monument 1987 Share Option Scheme - ------------------------------------------------------------------------------------------------------------------------------------ Number Number which can Number which can Number which can be be satisfied in be satisfied by satisfied by new issue cash compulsorily existing shares of shares - ------------------------------------------------------------------------------------------------------------------------------------ Maximum number of options 106,010 106,010 Nil 106,010 exercisable or capable of exercise on a change of control from the date hereof until 30/6/2001 - ----------------------------------------------------------------------------------------------------------------------------------- Maximum number of options 106,010 106,010 Nil 106,010 exercisable or capable of exercise on a change of control where the offer value is between 140p and 220p from the date hereof until 30/6/2001 - ------------------------------------------------------------------------------------------------------------------------------------
Part 4. Monument 1996 Option Plan - ------------------------------------------------------------------------------------------------------------------------------------ Number Number which can Number which can Number which must be satisfied in be satisfied be satisfied by new cash compulsorily by existing shares issue of shares - ------------------------------------------------------------------------------------------------------------------------------------ Maximum number of options 3,217,471 2,830,609 3,217,471 Nil exercisable or capable of exercise on a change of control from the date hereof until 30/6/2001 - ------------------------------------------------------------------------------------------------------------------------------------ Maximum number of options 3,217,471 2,830,609 3,217,471 Nil exercisable or capable of exercise on a change of control where the offer value is between 140p and 220p from the date hereof until 30/6/2001 - ------------------------------------------------------------------------------------------------------------------------------------
Part 5. LASMO SAYE Plan - ------------------------------------------------------------------------------------------------------------------------------------ Number Number which can Number which can Number which must be be satisfied in be satisfied by satisfied by new cash compulsorily existing shares issue of shares - --------------------------------------------------------------------- -------------------------------------------------------------- Maximum number of options 3,219,971 Nil Nil 3,219,971 exercisable or capable of exercise on a change of control under the LASMO SAYE Plan between the date hereof and 30/6/2001 - ------------------------------------------------------------------------------------------------------------------------------------ Maximum number of options 3,121,406 Nil Nil 3,121,406 exercisable or capable of exercise on a change of control under the LASMO SAYE Plan where the offer value is between 140p and 220p from the date hereof until 30/6/2001 - ------------------------------------------------------------------------------------------------------------------------------------
Part 6. LASMO Share Appreciation Plan - ------------------------------------------------------------------------------------------------------- ---------------------------- Number Number which Number which can be Number which must can be satisfied satisfied by existing be satisfied by new in cash compulsorily shares issue of shares - ------------------------------------------------------------------------------------------------------------------------------------ Maximum number of options Nil Nil Nil Nil exercisable or capable of exercise on a change of control under the LASMO Share Appreciation Plan between the date hereof and 30/6/2001 - ------------------------------------------------------------------------------------------------------------------------------------ Maximum number of options Nil Nil Nil Nil exercisable or capable of exercise on a change of control under the LASMO Share Appreciation Plan where the offer value is between 140p and 220p from the date hereof until 30/6/2001 - ------------------------------------------------------------------------------------------------------- ----------------------------
Part 7. LASMO Equity Plan - -------------------------------------------------------------------------------- Base number of shares currently subject to awards under the plan - -------------------------------------------------------------------------------- Proportion which can be satisfied in cash 100% - -------------------------------------------------------------------------------- Part 8. Other - -------------------------------------------------------------------------------- Existing issued share capital of 1,344,328,323 ordinary LASMO (by class) shares of 25p each (including the shares beneficially held by Methodplan and 1,616,633 held by the trustee of the LASMO Employee Share Trust) - -------------------------------------------------------------------------------- Authorised share capital of LASMO 1,703,812,700 ordinary shares of 25p each - -------------------------------------------------------------------------------- Number of shares held by any subsidiary Not less than 8,458,007 undertakings of LASMO (and not more than 8,658,007 beneficially held by Methodplan - -------------------------------------------------------------------------------- Number of shares issuable upon the Only those shares which fail exercise of subscription rights or to be issued upon conver- conversion rights (save as disclosed in sion of the 7 3/4% conver- Parts 1-7 above) tible bonds due 2005. The current conversion price is 541p per share. - --------------------------------------------------------------------------------
                                                                      EXHIBIT 12
To:      Amerada Hess Corporation ("Amerada Hess")


and      Goldman Sachs International ("Goldman Sachs")


                                                                 5 November 2000


Dear Sirs,

Amerada Hess is  proposing to make a general  offer to acquire all of the issued
and to be issued  ordinary  shares of LASMO plc ("LASMO")  substantially  on the
terms of the attached draft press announcement (the "Press Announcement").

In  consideration  of  Amerada  Hess  agreeing  to make the  Offer on the  basis
specified in paragraph 5, Electrafina S.A. ("Electrafina") has entered into this
agreement with each of Amerada Hess and Goldman Sachs.

1.       Shareholdings

Electrafina represents and warrants to Amerada Hess that:

(a)      Electrafina  is the sole  registered  holder of the number of  ordinary
         shares  of  25p  in  LASMO  referred  to in the  Schedule  (the  "LASMO
         Shares");

(b)      Electrafina  holds its  interests  in the LASMO Shares and has power to
         sell and  transfer the LASMO Shares under the Offer free from any lien,
         charge,  option,  equity or  encumbrance  and free from any third party
         right or interest;

(c)      neither  Electrafina nor any of its  subsidiaries  has entered into any
         undischarged  contract  or  arrangement  under  which it is required to
         dispose of any interest in the LASMO Shares;

(d)      Electrafina has full power and authority to enter into this undertaking
         and to  perform  its  obligations  under  it  without  the need for any
         sanction or permission from any third party.

2.       Dealings

2.1  Electrafina  undertakes to Amerada Hess that, from (and including) the date
of this  agreement to (and  including) the date on which the Offer becomes or is
declared  wholly  unconditional,  it will not (other than by  acceptance of this
Offer) sell any LASMO Shares or any interest therein;

3.       Acceptance of the Offer

3.1      Electrafina undertakes to Amerada Hess that it will:

(a)      accept the Offer,  in  accordance  with the relevant  provisions of the
         document to be despatched on terms and conditions  consistent  with the
         Press  Announcement  to LASMO  shareholders  containing  the Offer (the
         "Offer Document"),  in respect of all the LASMO Shares and will perform
         the agreement to which that  acceptance  gives rise, in accordance with
         the relevant provisions of the Offer Document;

(b)      not withdraw any acceptances of the Offer.

3.2 The  acceptances  of the Offer  which  Electrafina  is obliged to deliver or
cause to be delivered  pursuant to paragraph  3.1 will be delivered by not later
than 4.00 p.m.  on the day  falling  twenty one days after the date of the Offer
Document.

4.       Voting Rights

4.1 From (and  including) the date of this  undertaking  to (and  including) the
date on which the Offer ceases to be open for acceptance:

(a)      Electrafina  will  exercise  the voting  rights  attached  to its LASMO
         Shares  and any  Further  LASMO  Shares on a  Relevant  Resolution  (as
         defined  in  paragraph  4.3) only in  accordance  with  Amerada  Hess's
         directions; and

(b)      Electrafina  will exercise the rights attaching to its LASMO Shares and
         any  further  LASMO  Shares  in  order  to   requisition   or  join  in
         requisitioning  any general or class meeting of  shareholders  of LASMO
         for the purposes of  considering a Relevant  Resolution  and to require
         LASMO pursuant to section 376 Companies Act 1985 to give notice of such
         a resolution only in accordance with Amerada Hess's directions.

4.2 For the purpose of casting  votes or causing  votes to be cast on a Relevant
Resolution pursuant to paragraph 4.1,  Electrafina will cause to be executed and
delivered  to Amerada Hess  promptly any form of proxy  required by Amerada Hess
appointing a person nominated by Amerada Hess to attend and vote at the relevant
general meeting of LASMO.

4.3      A "Relevant Resolution" means:

(a)      a resolution  (whether or not  amended)  proposed at a general or class
         meeting of  shareholders  of LASMO,  or at an  adjourned  meeting,  the
         passing of which is necessary to implement  the Offer or the passing of
         which or failure to pass which  might  result in any  condition  of the
         Offer not being fulfilled or which might impede or frustrate the Offer;

(b)      a resolution to adjourn a general or class meeting of  shareholders  of
         LASMO the business of which includes the  consideration of a resolution
         of the kind referred to in sub-paragraph (a) above; and

(c)      a  resolution  to  amend  any  resolution  of the kind  referred  to in
         sub-paragraphs (a) or (b) above.


5.       The Offer
5.1 Subject to paragraph 5.2, Amerada Hess agrees to make the Offer if the Press
Announcement is published,  with Amerada Hess's prior approval, in substantially
the form attached (or in such other form as may be agreed  between  Amerada Hess
and LASMO or as may be required to comply with the  requirements of the Panel on
Takeovers and Mergers (the  "Panel")) by not later than 6 November 2000 (or such
later date as Amerada Hess and LASMO may agree).  Approval of the release of the
Press Announcement is at Amerada Hess's absolute discretion.

5.2 Amerada Hess will not be obliged to make or proceed with the Offer if, after
the Press Announcement is published:

(a)      the Panel consents to Amerada Hess not proceeding with the Offer; or

(b)      Amerada Hess is no longer  required by the City Code on  Takeovers  and
         Mergers (the "Code") to proceed with the Offer.

5.3 Amerada Hess shall have no liability to Electrafina  for any failure to make
or  implement  the  Offer  and  Electrafina  will not be  entitled  to  specific
performance of Clause 5.1, if, in each case,  Amerada Hess has become aware that
any  condition  of the Offer as set out in the  Press  Announcement  has  become
incapable of being fulfilled.

5.4      The obligations of Electrafina under this agreement will lapse if:

(a)      the Press Announcement is not released on 6 November 2000 or such later
         date but no later than 30 November  2000 as Amerada  Hess and LASMO may
         agree; or

(b)      the Offer is not made or Amerada  Hess does not proceed  with the Offer
         in any of the circumstances referred to in paragraph 5.2.

and in those  circumstances  neither party will have any claim against the other
except in respect of any prior breach.

6.       Documentation

6.       Electrafina consents to:

(a)      the inclusion of references to  Electrafina  and this  agreement in the
         Press Announcement;

(b)      particulars of this agreement and Electrafina's  interests and dealings
         in relevant  securities of LASMO being  included in the Offer  Document
         and any other related or ancillary document,  to the extent required by
         the City Code on  Takeovers  and  Mergers  (the  "Code") or in order to
         avoid a false market in securities of LASMO or Amerada Hess; and

(c)      this  agreement  being  available for  inspection  until the end of the
         offer period (as defined in the Code).


7.       Higher Competing Offer
7.1  Electrafina's  obligations  under  paragraph 3 above will lapse if a Higher
Competing Offer is made by a third party prior to the latest time for acceptance
of the Offer (pursuant to this letter) in respect of any LASMO Shares.

7.2 For the purposes of this agreement a "Higher Competing Offer" means an offer
by a third  party  for the  fully  diluted  ordinary  shares  of 25p each in the
capital of LASMO which has a value, upon the announcement of a firm intention on
the part of the third  party to make  such  offer  (without  a  requirement  for
fulfilment  of any  precondition),  for each  share in LASMO to which it relates
which is more than 110 per  cent.  of the lower of (a) 180p and (b) the Offer as
at close of NYSE  dealing on the NYSE  dealing day  immediately  preceding  such
announcement  translating the value of Amerada Hess shares from U.S.  dollars to
sterling at the exchange rate prevailing at the time.


8.       Confirmation
Electrafina  confirms  that in relation to signing  this  agreement  it is not a
customer of Goldman  Sachs for the purposes of the Rules of The  Securities  and
Futures Authority and that Goldman Sachs does not owe it any of the duties which
it owes to its customers.


9.       Interpretation
In this  agreement  the  "Offer"  means  the offer to be made by or on behalf of
Amerada  Hess  to  acquire  ordinary  shares  of  25p in the  capital  of  LASMO
substantially on the terms of the Press  Announcement or on such terms as may be
required  to comply with the  requirements  of the Panel.  A  reference  in this
agreement to the "Offer" also includes any new, increased,  renewed, extended or
revised  offer made by or on behalf of Amerada Hess prior to the Offer  lapsing,
closing for acceptances or being withdrawn to acquire ordinary shares in LASMO.


10.      Time of the Essence
Any time,  date or period  mentioned in this agreement may be extended by mutual
agreement  but as  regards  any  time,  date or  period  originally  fixed or as
extended, time shall be of the essence.


11.      General
11.1 The obligations of Electrafina  under this agreement are without  prejudice
to any  rights  of  Amerada  Hess or  Goldman  Sachs at  common  law or  equity.
Invalidity  of any  provision  of this  agreement  will  not  affect  any  other
provision.

11.2 Any  failure  or delay by any  person in  exercising  any  right,  power or
privilege  under  this  agreement  will not  comprise  a waiver  and a single or
partial exercise will not restrict any further exercise.

11.3 This  agreement is governed by and is to be construed  in  accordance  with
English law and each of the parties submits to the exclusive jurisdiction of the
English courts for all purposes in connection with this agreement.


                                    SCHEDULE

                                  LASMO Shares



Registered Holder        Beneficial Owner         Ordinary Shares of 25p
                                                  each in LASMO

Electrafina S.A.         Electrafina S.A.         98,336,161








EXECUTED by ELECTRAFINA S.A. by  )        ----------------------------


GERALD FAERE                     THIERRY de RUDDER
(print name)


EXECUTED by AMERADA HESS         )        ----------------------------
CORPORATION by                   )


- -------------------------------
(print name)

                                                                      EXHIBIT 13
To:      Amerada Hess Corporation ("Amerada Hess")


and      Goldman Sachs International ("Goldman Sachs")


                                                                 5 November 2000


Dear Sirs,

Amerada Hess is  proposing to make a general  offer to acquire all of the issued
and to be issued  ordinary  shares of LASMO plc ("LASMO")  substantially  on the
terms of the attached draft press announcement (the "Press Announcement").

In  consideration  of  Amerada  Hess  agreeing  to make the  Offer on the  basis
specified in paragraph 5, Schroders  Investment  Management  Limited ("SIM") has
entered into this agreement with each of Amerada Hess and Goldman Sachs.

1.       Shareholdings

SIM represents and warrants to Amerada Hess that:

(a)      SIM has the  power to cause to be sold and  transferred  in  accordance
         with the terms of the Offer ____ ordinary  shares of 25p in LASMO which
         are not registered in its name (the "Controlled Shares");

(b)      SIM has power to sell and  transfer  the  Controlled  Shares  under the
         Offer free from any lien,  charge,  option,  equity or encumbrance  and
         free from any third party right or interest;

(c)      except as disclosed to Amerada Hess in writing,  neither SIM nor any of
         its  subsidiaries  has entered into any contract or  arrangement  under
         which it is  required  to dispose  of any  interest  in the  Controlled
         Shares;

(d)      SIM has full power and authority to enter into this  undertaking and to
         perform its  obligations  under it without the need for any sanction or
         permission from any third party.

2.       Dealings

2.1 SIM undertakes to Amerada Hess that,  from (and  including) the date of this
agreement to (and  including) the date on which the Offer becomes or is declared
wholly unconditional,  it will not (other than by acceptance of this Offer) sell
any Controlled Shares or any interest therein;

3.       Acceptance of the Offer

3.1      SIM undertakes to Amerada Hess that it will:

(a)      take all action within its power to cause the registered  holder of the
         Controlled  Shares to accept the Offer in respect of all the Controlled
         Shares and to perform  the  agreement  to which that  acceptance  gives
         rise, in accordance with the relevant provisions of the Offer Document;

(b)      not  withdraw  any  acceptances  of the Offer and will take all actions
         within  its  power  to  procure  that  the  registered  holder  of  any
         Controlled Shares will not do so.

3.2 The  acceptances of the Offer which SIM is obliged to deliver or cause to be
delivered  pursuant to  paragraph  3.1 will be  delivered by not later than 4.00
p.m. on the day falling twenty one days after the date of the Offer Document.

3.3 If requested to do so, SIM will procure that the registered holder(s) of the
Controlled  Shares give Amerada Hess an  undertaking in the terms of paragraph 4
of this undertaking.

4.       Voting Rights

4.1 From (and  including) the date of this  undertaking  to (and  including) the
date on which the Offer ceases to be open for acceptance:

(a)      SIM will  procure  the  exercise of the voting  rights  attached to the
         Controlled  Shares on a Relevant  Resolution  (as defined in  paragraph
         4.3) only in accordance with Amerada Hess's directions;

(b)      SIM will procure the exercise of the rights attaching to the Controlled
         Shares in order to requisition or join in requisitioning any general or
         class meeting of  shareholders of LASMO for the purposes of considering
         a Relevant  Resolution  and to require  LASMO  pursuant  to section 376
         Companies  Act  1985  to  give  notice  of  such a  resolution  only in
         accordance with Amerada Hess's directions; and

(c)      SIM will ensure that the  registered  holder of any  Controlled  Shares
         will comply with sub-paragraphs (a) and (b) above.

4.2 For the purpose of casting  votes or causing  votes to be cast on a Relevant
Resolution  pursuant  to  paragraph  4.1,  SIM  will  cause to be  executed  and
delivered  to Amerada Hess  promptly any form of proxy  required by Amerada Hess
appointing a person nominated by Amerada Hess to attend and vote at the relevant
general meeting of LASMO.

4.3      A "Relevant Resolution" means:

(a)      a resolution  (whether or not  amended)  proposed at a general or class
         meeting of  shareholders  of LASMO,  or at an  adjourned  meeting,  the
         passing of which is necessary to implement  the Offer or the passing of
         which or failure to pass which  might  result in any  condition  of the
         Offer not being fulfilled or which might impede or frustrate the Offer;

(b)      a resolution to adjourn a general or class meeting of  shareholders  of
         LASMO the business of which includes the  consideration of a resolution
         of the kind referred to in sub-paragraph (a) above; and

(c)      a  resolution  to  amend  any  resolution  of the kind  referred  to in
         sub-paragraphs (a) or (b) above.


5.       The Offer
5.1 Subject to paragraph 5.2, Amerada Hess agrees to make the Offer if the Press
Announcement is published,  with Amerada Hess's prior approval, in substantially
the form attached (or in such other form as may be agreed  between  Amerada Hess
and LASMO or as may be required to comply with the  requirements of the Panel on
Takeovers and Mergers (the "Panel")) by not later than 6 November 2000. Approval
of  the  release  of  the  Press  Announcement  is at  Amerada  Hess's  absolute
discretion.

5.2 Amerada Hess will not be obliged to make or proceed with the Offer if, after
the Press Announcement is published:

(a)      the Panel consents to Amerada Hess not proceeding with the Offer; or

(b)      Amerada Hess is no longer  required by the City Code on  Takeovers  and
         Mergers (the "Code") to proceed with the Offer.

5.3  Amerada  Hess shall  have no  liability  to SIM for any  failure to make or
implement  the Offer and SIM will not be  entitled to  specific  performance  of
Clause 5.1, if, in each case,  Amerada Hess has become aware that any  condition
of the Offer as set out in the Press  Announcement has become incapable of being
fulfilled.

5.4      The obligations of SIM under this agreement will lapse if:

(a)      the Press Announcement is not released on 6 November 2000; or

(b)      the  Offer  is not  made  in any of the  circumstances  referred  to in
         paragraph 5.2.

and in those  circumstances  neither party will have any claim against the other
except in respect of any prior breach.

6.       Documentation

6.       SIM consents to:

(a)      the  inclusion  of  references  to SIM and this  agreement in the Press
         Announcement;

(b)      particulars  of this  agreement  and SIM's  interests  and  dealings in
         relevant  securities of LASMO being  included in the Offer Document and
         any other related or ancillary document,  to the extent required by the
         City Code on Takeovers  and Mergers (the "Code") or in order to avoid a
         false market in securities of LASMO or Amerada Hess; and

(c)      this  agreement  being  available for  inspection  until the end of the
         offer period (as defined in the Code).


7.       Higher Competing Offer
7.1 SIM's  obligations  under paragraph 3 above will lapse if a Higher Competing
Offer is made by a third party prior to the latest  time for  acceptance  of the
Offer (pursuant to this letter) in respect of any LASMO Shares.

7.2 For the purposes of this agreement a "Higher Competing Offer" means an offer
by a third  party  for the  fully  diluted  ordinary  shares  of 25p each in the
capital of LASMO which has a value, upon the announcement of a firm intention on
the part of the third  party to make  such  offer  (without  a  requirement  for
fulfilment  of any  precondition),  for each  share in LASMO to which it relates
which is more than 110 per cent.  of the lower of (a) 180p and (b) the  sterling
value  of the  Offer  as at  close  of NYSE  dealing  on the  NYSE  dealing  day
immediately  preceding such  announcement  translating the value of Amerada Hess
shares from U.S.  dollars to sterling at the exchange  rate  prevailing  at that
time.


8.       Confirmation
SIM confirms that in relation to signing this  agreement it is not a customer of
Goldman  Sachs for the  purposes  of the  Rules of The  Securities  and  Futures
Authority and that Goldman Sachs does not owe it any of the duties which it owes
to its customers.


9.       Interpretation
In this  agreement  the  "Offer"  means  the offer to be made by or on behalf of
Amerada  Hess  to  acquire  ordinary  shares  of  25p in the  capital  of  LASMO
substantially on the terms of the Press  Announcement or on such terms as may be
required  to comply with the  requirements  of the Panel.  A  reference  in this
agreement to the "Offer" also includes any new, increased,  renewed, extended or
revised  offer made by or on behalf of Amerada Hess prior to the Offer  lapsing,
closing for acceptances or being withdrawn to acquire ordinary shares in LASMO.


10.      Time of the Essence
Any time,  date or period  mentioned in this agreement may be extended by mutual
agreement  but as  regards  any  time,  date or  period  originally  fixed or as
extended, time shall be of the essence.


11.      General
11.1 The  obligations of SIM under this  agreement are without  prejudice to any
rights of Amerada Hess or Goldman  Sachs at common law or equity.  Invalidity of
any provision of this agreement will not affect any other provision.

11.2 Any  failure  or delay by any  person in  exercising  any  right,  power or
privilege  under  this  agreement  will not  comprise  a waiver  and a single or
partial exercise will not restrict any further exercise.

11.3  Without  prejudice  to any right to damages in respect of a breach of this
agreement,  SIM agrees that damages would not be an adequate  remedy and Amerada
Hess will be entitled to equitable  relief  (including  specific  performance or
injunction)  if there is a  threatened,  actual or  anticipatory  breach of this
agreement by SIM.

11.4 This  agreement is governed by and is to be construed  in  accordance  with
English law and each of the parties submits to the exclusive jurisdiction of the
English courts for all purposes in connection with this agreement.


EXECUTED by SCHRODERS INVESTMENT           )
MANAGEMENT LIMITED by                      )        J.C.O. METCALFE


- - - - - - - - - - - - - - - - - - -
    (print name)





EXECUTED by AMERADA HESS                   )
CORPORATION by                             )        J. BARCLAY COLLINS


 - - - - - - - - - - - - - - - - - -
    (print name)