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               17 March 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      43,350,206      4.19%      2,372,881     0.23%
securities
(2) Derivatives    1,266,955      0.12%        630,407     0.06%
(other than
options)
(3) Options and      308,800      0.03%        308,800     0.03%
agreements to
purchase/sell
Total             44,925,961      4.35%      3,312,088     0.32%

(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      866                  5.7054
Purchase      1,180                5.6824
Purchase      631                  6.1850
Purchase      4,978                6.2951
Purchase      93,111               6.2686
Purchase      515,121              6.3507
Purchase      30,176               5.7226
Purchase      3,952                6.1749
Purchase      808                  6.3550
Purchase      9,617                6.3810
Purchase      61,894               6.4010
Purchase      143,918              6.2720
Purchase      14,580               6.3807
Purchase      3,655                6.4103
Purchase      73,861               6.1921
Purchase      5,962                6.3629
Purchase      11,535               6.4012
Purchase      4,477                6.3550
Purchase      32,222               5.7207
Purchase      32,833               6.3365
Sale          60,842               6.3758
Sale          21                   6.3952
Sale          14,733               6.4154
Sale          9,617                6.3809
Sale          32,879               6.4547
Sale          14,162               6.3053
Sale          74,441               6.4187
Sale          6,355                6.3521
Sale          22,216               6.4187
Sale          22,232               6.4547
Sale          32,222               5.7207
Sale          2,484                6.3550
Sale          7,984                6.3538
Sale          18,091               6.3538
Sale          32,854               6.4187
Sale          74,496               6.4547
Sale          1,944                6.3550
Sale          51,385               6.2928
Sale          76,109               6.3279
Sale          34,951               6.3664
Sale          5,399                6.3538

(b)  Derivatives transactions (other than options)
Product name,  Long/Short    Number of     Price per
(e.g. CFD)     (Note 6)      Securities    unit (GBP)
CFD            Short         3952          6.1748
CFD            Short         73861         6.1921
CFD            Short         93111         6.2686
CFD            Short         143918        6.2719
CFD            Short         4978          6.2951
CFD            Short         32833         6.3365
CFD            Short         515121        6.3507
CFD            Short         56            6.3991
CFD            Short         61894         6.401
CFD            Short         11535         6.4012
CFD            Long          6021          6.2079
CFD            Long          14162         6.3052
CFD            Long          76109         6.3279
CFD            Long          34951         6.3663
CFD            Long          60842         6.3758

(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                         18 March 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)

DETAILS OF OPEN POSITIONS
(This form should be attached to Form 8.1, Form 8.1(b)(ii) or Form 8.3, as appropriate)


Product name,     Written or  Number of securities   Exercise price   Type, e.g.     Expiry date
e.g. call option  purchased   to which the option    (Note 2)         American,

Option            Purchased   143,000                4.7356           EURO           26/03/2008
Option            Purchased   143,000                5.3670           EURO           26/03/2008
Option            Purchased   11,400                 5.2965           EURO           27/05/2008
Option            Purchased   11,400                 6.0027           EURO           27/05/2008
Option            Purchased   -11,400                6.0027           EURO           27/05/2008
Option            Purchased   -11,400                5.2965           EURO           27/05/2008
Option            Purchased   -143,000               5.3670           EURO           26/03/2008
Option            Purchased   -143,000               4.7356           EURO           26/03/2008

Notes

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