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) 14 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 41,220,627 3.99% 418,613 0.04% securities (2) Derivatives 595,026 0.06% 770,282 0.07% (other than options) (3) Options and 0 0.00% 0 0.00% agreements to purchase/sell Total 41,815,653 4.04% 1,188,895 0.11% (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 258 7.3200 Purchase 12,885 7.3250 Purchase 47,550 7.3265 Purchase 2,680 7.3004 Purchase 196,413 7.3079 Purchase 1,719 7.3512 Purchase 400 7.3125 Purchase 30 7.2100 Purchase 1,448 7.3900 Purchase 1,023 7.3452 Purchase 3,638 7.3900 Purchase 8,254 7.3344 Purchase 1,370 7.2500 Purchase 1,063 7.3326 Purchase 12,855 7.3450 Purchase 25,466 7.3900 Purchase 3,319 7.3228 Sale 400 7.3125 Sale 20,270 7.3335 Sale 12,885 7.3250 Sale 4,092 7.3377 Sale 30 7.2100 Sale 1,331 7.2728 Sale 15 7.2850 Sale 199,933 7.3332 Sale 5,711 7.3358 Sale 4,433 7.3263 Sale 28,348 7.3900 Sale 12,855 7.3450 Sale 13,725 7.0691 Sale 23,483 7.3900 Sale 17,300 7.2100 (b) Derivatives transactions (other than options) Product name, Long/Short Number of Price per (e.g. CFD) (Note 6) Securities unit (GBP) CFD Long 13725 7.069 CFD Long 400 7.3125 CFD Long 4433 7.3263 CFD Long 199933 7.3332 CFD Long 20270 7.3334 CFD Long 5711 7.3358 CFD Long 4092 7.3376 CFD Long 3331 7.39 CFD Short 2680 7.3004 CFD Short 196413 7.3079 CFD Short 400 7.3125 CFD Short 47550 7.3264 CFD Short 1023 7.3452 CFD Short 1719 7.3512 (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 15 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

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