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               13 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      45,014,120       4.35%        60,927     0.01%
securities
(2) Derivatives      108,833       0.01%     1,258,389     0.12%
(other than
options)
(3) Options and            0       0.00%            0      0.00%
agreements to
purchase/sell
Total             45,122,953       4.37%     1,319,316     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      36,028               6.8918
Purchase      59,683               6.8705
Purchase      30,469               6.8393
Purchase      10,000               6.8779
Purchase      14,758               6.8063
Purchase      67,308               6.8732
Purchase      2,845                6.9200
Purchase      18,883               6.8060
Purchase      11,091               6.8325
Purchase      7,451                6.8050
Purchase      22,853               6.8050
Purchase      980                  6.8050
Purchase      35,562               6.8050
Sale          1,622                6.8986
Sale          38,174               6.8391
Sale          1,486                6.8986
Sale          37,229               6.8733
Sale          46,592               6.9100
Sale          800                  6.8986
Sale          17,800               6.9060
Sale          13,970               6.9100
Sale          20,669               6.9100
Sale          18,632               6.8441

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          38174         6.8391
CFD            Long          18632         6.8441
CFD            Long          2845          6.8672
CFD            Long          37229         6.8733
CFD            Long          17800         6.906
CFD            Short         18883         6.806
CFD            Short         14758         6.8062
CFD            Short         11091         6.8325
CFD            Short         30469         6.8392
CFD            Short         59683         6.8704
CFD            Short         67308         6.8731
CFD            Short         36028         6.8918
CFD            Short         1797          6.8962

(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                         14 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