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               22 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      44,747,196       4.33%      152,016      0.01%
securities
(2) Derivatives      183,742       0.02%    1,236,535      0.12%
(other than
options)
(3) Options and            0       0.00%            0      0.00%
agreements to
purchase/sell
Total             44,930,938       4.35%     1,388,551     0.13%


(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      7,156                7.3400
Purchase      24,079               7.3206
Purchase      24,995               7.3477
Purchase      6,239                7.1000
Purchase      29,318               7.3071
Purchase      5,623                7.3400
Purchase      29,525               7.3400
Purchase      1,951                7.3400
Purchase      13,518               7.3400
Purchase      2,100                7.3750
Purchase      8,207                7.2720
Purchase      2,084                7.3511
Purchase      10,167               7.1000
Purchase      1,600                7.3250
Sale          10,062               7.3681
Sale          29,318               7.3071
Sale          56,850               7.3516
Sale          1,215                7.3928
Sale          419                  7.3550
Sale          17,663               7.3459
Sale          13,120               7.3672
Sale          12,775               7.3303
Sale          2,000                7.4000
Sale          1,099                7.3400
Sale          22,284               7.3400
Sale          29,318               7.3071
Sale          39,520               7.1000
Sale          2,869                7.1500
Sale          20,378               7.3505

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          12775         7.3302
CFD            Long          17663         7.3459
CFD            Long          20378         7.3505
CFD            Long          56850         7.3516
CFD            Long          13120         7.3672
CFD            Long          10062         7.368
CFD            Long          1215          7.3927
CFD            Long          2000          7.4
CFD            Short         8207          7.2719
CFD            Short         24079         7.3205
CFD            Short         1600          7.325
CFD            Short         1951          7.34
CFD            Short         24995         7.3477
CFD            Short         2100          7.375

(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                         23 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