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               15 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      45,036,191       4.36%        35,206     0.00%
securities
(2) Derivatives       83,112       0.01%     1,283,400     0.12%
(other than
options)
(3) Options and            0       0.00%            0      0.00%
agreements to
purchase/sell
Total             45,119,303       4.37%    1,318,606      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      28,439               6.8000
Purchase      1,524                6.8168
Purchase      12,104               6.8026
Purchase      14,687               6.7989
Purchase      8,174                6.8115
Purchase      21,602               6.7963
Purchase      1,143                6.8013
Purchase      2,345                6.8086
Purchase      7,700                6.7742
Purchase      1,762                6.8000
Purchase      61                   6.8000
Purchase      982                  6.8000
Purchase      65,001               6.7982
Purchase      661                  6.8000
Purchase      10,665               6.8000
Purchase      9,616                6.8088
Purchase      6,694                6.8007
Purchase      4,103                6.8333
Sale          206                  6.8000
Sale          9,293                6.8013
Sale          31,147               6.8044
Sale          12,200               6.8565
Sale          3                    6.8660
Sale          65,734               6.7750
Sale          8,451                6.7992
Sale          8,164                6.8490
Sale          1,408                6.8000
Sale          14,670               6.8000
Sale          6,252                6.8000
Sale          2,484                6.8000
Sale          3,167                6.8000
Sale          9,317                6.8195

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Long          8451          6.7992
CFD            Long          9293          6.8012
CFD            Long          2948          6.8014
CFD            Long          31147         6.8044
CFD            Long          9317          6.8194
CFD            Long          8164          6.8489
CFD            Long          12200         6.8564
CFD            Short         7700          6.7742
CFD            Short         21602         6.7962
CFD            Short         65001         6.7981
CFD            Short         14687         6.7988
CFD            Short         6694          6.8006
CFD            Short         1143          6.8012
CFD            Short         12104         6.8026
CFD            Short         2345          6.8086
CFD            Short         9616          6.8087
CFD            Short         8174          6.8115
CFD            Short         1524          6.8168

(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