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) 17 October 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 41,278,929 3.99% 575,501 0.06% securities (2) Derivatives 761,536 0.07% 769,448 0.07% (other than options) (3) Options and 0 0.00% 0 0.00% agreements to purchase/sell Total 42,040,465 4.07% 1,344,949 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 1,478 7.2756 Purchase 80,612 7.3065 Purchase 77,580 7.3414 Purchase 11,965 7.3065 Purchase 9,446 7.2916 Purchase 2,630 7.2752 Purchase 1,000 7.2725 Purchase 3,647 7.2904 Purchase 131 7.3900 Purchase 64,427 7.2550 Purchase 3,896 7.3900 Purchase 545 7.3500 Purchase 4,427 7.3900 Purchase 21,425 7.3900 Purchase 11,141 7.3900 Purchase 1,862 7.3900 Purchase 6,815 7.3031 Sale 1,409 7.2796 Sale 9,156 7.3889 Sale 12,398 7.2977 Sale 1,000 7.2725 Sale 8,178 7.3147 Sale 2,689 7.2950 Sale 285,465 7.2805 Sale 6,862 7.3900 Sale 2,649 7.3889 (b) Derivatives transactions (other than options) Product name, Long/Short Number of Price per (e.g. CFD) (Note 6) Securities unit (GBP) CFD Long 1000 7.2725 CFD Long 1409 7.2795 CFD Long 285465 7.2805 CFD Long 12398 7.2977 CFD Long 8178 7.3147 CFD Long 11805 7.3888 CFD Short 1000 7.2725 CFD Short 3647 7.2904 CFD Short 6815 7.303 CFD Short 92577 7.3065 CFD Short 77580 7.3414 (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 20 October 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

Companies

Barclays (BARC)
UK 100

Latest directors dealings