Rule 8.3 - EDINBURGH OIL & GAS

FORM 8.3

Lodge with a RIS or Newstrack, if appropriate, and the Takeover Panel. Use separate form for
each class of securities in which dealings have been made.

Date of Disclosure 26 April 2005

DISCLOSURE UNDER RULES 8.1(a), 8.1(b) (i) and 8.3 OF THE CITY CODE ON TAKEOVERS
AND MERGERS

Date of Dealing 25 April 2005

Dealing in EDINBURGH OIL & GAS

Class of securities (eg ordinary shares) ORD GBP 0.05

(2) Amount bought Amount sold Price per unit
          100,000           0         2.9529

Barclays PLC is party to certain CFD transactions (see below). The resultant holdings total
includes hedges against CFDs (long - 118,222 shares).

(3) Resultant total of the same class owned or controlled
(and percentage of class) 985,676 (2.35%)

(4) Party making disclosure Barclays PLC

(5) EITHER (a) Name of purchaser / vendor (Note 1)
           (b) if dealing for discretionary clients, name of fund management organisation
Barclays PLC

(6) Reason for disclosure (Note 2)

(a) associate of (i) offeror (Note 3) NO
                (ii) offeree NO

Specify which category or categories of associate (1-8 overleaf)
(b) Rule 8.3 (I.e disclosure because of ownership or control of 1% or more of the class
   of relevant securities dealt in) YES

Signed for and on behalf of the party named in (4) above

Geoff Smith
Telephone and extension number
0207 116 2913

Form 8 Enclosure

A purchaser of a CFD will realise a gain if the price of the underlying security goes up. A seller
of a CFD will realise a gain if the price of the underlying security goes down. The CFD contracts
are open ended and there is no rollover into new contracts.

Contracts for Differences

Edinburgh Oil & Gas PLC   CFD
                          Long / Short Trade Date Buy/Sell Quantity Open Price
                                  Long 05/01/2005       B    12,000    1.9980
                                  Long 20/01/2005       B    21,533    1.9200
                                  Long 26/01/2005       B    38,722    1.8881
                                  Long 93/02/2005       B    83,222    1.9930
                                  Long 09/02/2005       B    43,020    2.0679
                                  Long 02/03/2005       B    19,725    2.1700
                                 Short 25/04/2005       S   100,000    2.9529