RNS Number:8455J
Anglo Siberian Oil Company PLC
09 April 2003

9 April 2003

Anglo Siberian Oil Company plc - re Vankor Agreements

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As announced on 4 April 2003, Hoare Govett Limited has made a cash offer of #1
per share for all the shares of Anglo Siberian Oil Company plc ("Anglo Siberian"
or the "Company") on behalf of a wholly owned subsidiary of OJSC Oil Company
Rosneft (the "Offer").

The Offer was received shortly after Anglo Siberian, TotalFinaElf E&P Vankor
("TotalFinaElf"), Yukos Oil Corporation ("Yukos") and Yeniseyneft Limited
Liability Company ("Yeniseyneft", the Russian joint venture company which holds
the Vankor licence) had concluded three contracts as follows:

1.  Operations on the Vankor licence

On 31 March 2003, TotalFinaElf and Yeniseyneft entered into an unconditional
Technical Services Agreement.  This provides that TotalFinaElf will assume
responsibility for the conduct of Vankor operations.  The Agreement runs for the
life of the Vankor licence and either party may terminate it at 30 days' notice
without penalty.

TotalFinaElf and Anglo Siberian have entered into a related  Agreement covering
the operating costs of Yeniseyneft.  This provides that TotalFinaElf will bear
the costs incurred by Yeniseyneft in carrying out the agreed work programme on
the Vankor licence from 1 January 2003 to 18 December 2003.

Neither of these Agreements involves the transfer of any interest in Yeniseyneft
by the Company.

2.  Framework Agreement with Yukos

On 3 April 2003, Yukos signed a Framework Agreement with Anglo Siberian and its
subsidiaries.  The Agreement governs relations between Yukos and Anglo Siberian.
It finalises the discussions (commenced in January 2002 and already reported
to shareholders on 30 September 2002 in the Interim Report for the first half of
2002) that, upon the disputed 17% interest in Yeniseyneft originally owned by
OAO Yeniseyneftegas finally being recovered in full, Anglo Siberian would
receive 7%.  If the interest were partially recovered, Anglo Siberian would
receive a smaller interest according to an agreed sliding scale.  It further
provides that, should a further 14% interest in Yeniseyneft, originally owned by
OAO Yeniseygeophysica and also now disputed, be recovered in full, Anglo
Siberian would receive a further 4% interest.  Anglo Siberian could thus acquire
a total of an additional 11% interest in Yeniseyneft.  Since this Agreement was
signed after Lynminster Limited had requisitioned an Extraordinary General
Meeting of shareholders to replace all the directors of Anglo Siberian with
their nominees, Yukos required that the above provisions were made conditional
on control of Anglo Siberian not passing to Lynminster or to their associates.
In no event is Anglo Siberian's current 59% interest affected by this Agreement.
This is subject to the Sale and Purchase Agreement made with TotalFinaElf on
22 May 2002, which has been executed but has not yet been completed.

The Directors do not believe that any of these Agreements, which were entered
into by Anglo Siberian prior to the announcement made by Rosneft Investments
Limited on 3 April 2003 that it was considering making an offer for the Company,
or any other agreements to which the Company is a party, affect any of the
conditions of the Offer, in particular condition (b).

The Directors continue to evaluate the terms of the Offer and will be writing
shortly to shareholders.  In the meantime, the Directors advise shareholders to
take no action.
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Enquiries:

Seymour Pierce - 020 7648 8700
Jonathan Wright - Director

Anglo Siberian - 020 7569 1100
Robert Kennedy - Chief Executive
Ian Wilson - Company Secretary

Hudson Sandler - 020 7796 4133
Michael Sandler
Jessica Rouleau
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The Directors of the Company accept responsibility for the information contained
in this announcement.  Seymour Pierce Limited ("Seymour Pierce"), which is
regulated in the United Kingdom by the Financial Services Authority, is acting
exclusively for the Company and no one else in connection with this announcement
and the matters described herein and will not be responsible to anyone other
than the Company for providing the protections afforded to customers of Seymour
Pierce or for providing advice in relation to this announcement and the matters
described herein.

The contents and publication of this announcement, which has been prepared by
and is the sole responsibility of the Company, have been approved for the sole
purposes of section 21 of the Financial Services and Markets Act 2000 by Seymour
Pierce, which is regulated in the United Kingdom by the Financial Services
Authority.


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