Rule 8.3 - BRITISH ENERGY GROUP

FORM 8.3

    DEALINGS BY PERSONS WITH INTERESTS IN SECURITIES REPRESENTING 1% OR MORE
              (Rule 8.3 of the City Code on Takeovers and Mergers)


1.   KEY INFORMATION

Name of person dealing        BARCLAYS PLC
(Note 1)
Company dealt in              BRITISH ENERGY GROUP
Class of relevant security    ORD GBP0.10
to which the dealings being
disclosed relate (Note 2)
Date of dealing               16 May 2008

2.   INTERESTS, SHORT POSITIONS AND RIGHTS TO SUBSCRIBE

(a)  Interests and short positions (following dealing) in the class of relevant
security dealt in (Note 3)

                            Long                     Short

                      Number       (%)         Number       (%)

(1) Relevant      45,504,914       4.40%        37,186     0.00%
securities
(2) Derivatives       81,905       0.01%     1,700,023     0.16%
(other than
options)
(3) Options and            0       0.00%            0      0.00%
agreements to
purchase/sell
Total             45,586,819       4.41%    1,737,209      0.17%


(b)  Interests and short positions in relevant securities of the company, other
     than the class dealt in (Note 3)

Class of                    Long                     Short
relevant
security:

                  Number              (%)   Number              (%)

(1) Relevant
securities

(2) Derivatives
(other than
options)

(3) Options and
agreements to
purchase/sell

Total


  (c)  Rights to subscribe (Note 3)

Class of relevant security:   Details



3.   DEALINGS (Note 4)

  (a)  Purchases and sales

Purchase/sale Number of Securities Price per unit
                                   (GBP)
Purchase      181,640              7.1975
Purchase      3,470                7.1782
Purchase      48,456               7.2182
Purchase      24,565               7.1877
Purchase      2,206                7.2500
Purchase      36,273               7.1877
Purchase      46,129               7.2015
Purchase      230,000              7.1961
Purchase      81,861               7.1877
Purchase      4,690                7.1722
Purchase      365                  7.2050
Purchase      1,498                7.1550
Purchase      331                  7.2412
Sale          37,128               7.2068
Sale          18,710               7.1588
Sale          2,000                7.1650
Sale          7,418                7.1754
Sale          2,000                7.2488
Sale          86,817               7.2500
Sale          6,329                7.1776
Sale          9,760                7.1750
Sale          4,890                7.1550
Sale          11,186               7.2159
Sale          6,523                7.2217

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          18710         7.1588
CFD            Long          2000          7.165
CFD            Long          5880          7.1677
CFD            Long          9760          7.175
CFD            Long          7418          7.1753
CFD            Long          6329          7.1776
CFD            Long          37128         7.2067
CFD            Long          6523          7.2217
CFD            Long          2000          7.2488
CFD            Short         3470          7.1781
CFD            Short         230000        7.1961
CFD            Short         181640        7.1974
CFD            Short         46129         7.2014
CFD            Short         365           7.205
CFD            Short         3187          7.2086
CFD            Short         48456         7.2181
CFD            Short         331           7.2412

(c)  Options transactions in respect of existing securities

(i)  Writing, selling, purchasing or varying

Product name,   Writing,          Number of          Exercise  Type, e.g.      Expiry   Option money
e.g. call       selling,          securities to      price     American,       date     paid/received
option          purchasing,       which the option             European etc.            per unit (GBP)
                varying etc.      relates (GBP)


(ii) Exercising

Product name, e.g.  Number of           Exercise price per
call option         securities          unit (Note 5)




(d)  Other dealings (including new securities) (Note 4)


Nature of transaction Details           Price per unit
(Note 8)                                (if applicable)
                                        (Note 5)




4.   OTHER INFORMATION
None

Agreements, arrangements or understandings relating to options or derivatives


Full details of any agreement, arrangement or understanding between the
person disclosing and any other person relating to the voting rights of
any relevant securities under any option referred to on this form or
relating to the voting rights or future acquisition or disposal of any
relevant securities to which any derivative referred to on this form is
referenced.  If none, this should be stated.




Is a Supplemental Form 8 attached? (Note 9)                 NO


Date of disclosure                         16 May 2008
Contact name                               Geoff Smith
Telephone number                           020 7116 2913
If a connected EFM, name of
offeree/offeror with which connected
If a connected EFM, state nature of
connection (Note 10)


Notes

The Notes on Form 8.3 can be viewed on the Takeover Panel's website at
www.thetakeoverpanel.org.uk