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               06 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      44,597,837       4.31%       161,339     0.02%
securities
(2) Derivatives      153,316       0.01%       615,703     0.06%
(other than
options)
(3) Options and            0       0.00%            0      0.00%
agreements to
purchase/sell
Total             44,751,153       4.33%       777,042     0.08%

(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      8,425                7.1156
Purchase      63,483               7.1543
Purchase      3,224                7.1614
Purchase      1,359                7.1700
Purchase      114,203              7.1500
Purchase      17,408               7.1068
Purchase      6,764                7.1762
Purchase      49,495               7.1237
Purchase      2,789                7.0650
Purchase      1,048                7.1800
Purchase      216,055              7.1475
Purchase      56,532               7.1324
Purchase      13,200               7.1465
Purchase      78,000               7.1500
Sale          1,654                7.1400
Sale          4,505                7.1100
Sale          17,408               7.1068
Sale          69,484               7.1530
Sale          8,632                7.1540
Sale          1,734                7.1050
Sale          2,700                7.1711
Sale          21,190               7.1750
Sale          1,173                7.1455
Sale          39,226               7.1455
Sale          15,561               7.1455
Sale          1,305                7.1600
Sale          12,717               7.1455
Sale          36,722               7.1455
Sale          9,123                7.1455
Sale          2,938                7.1562
Sale          17,178               7.1455
Sale          10,98                7.1009
Sale          590                  7.1425
Sale          14,007               7.1736
Sale          7,414                7.1050
Sale          1,500                7.1720
Sale          12,540               7.1437
Sale          6,031                7.1455
Sale          2,101                7.1050
Sale          40,366               7.1455

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          10980         7.1009
CFD            Long          17408         7.1067
CFD            Long          20528         7.1415
CFD            Long          590           7.1424
CFD            Long          69484         7.1529
CFD            Long          8632          7.1539
CFD            Long          2700          7.1711
CFD            Long          1500          7.172
CFD            Long          14007         7.1736
CFD            Short         8425          7.1155
CFD            Short         49495         7.1236
CFD            Short         56532         7.1323
CFD            Short         216055        7.1475
CFD            Short         63483         7.1543
CFD            Short         1359          7.17
CFD            Short         6764          7.1761
CFD            Short         1048          7.18

(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                         07 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