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 10 April 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 43,502,432 4.21% 1,291,317 0.12% securities (2) Derivatives 859,907 0.08% 636,559 0.06% (other than options) (3) Options and 0 0.00% 0 0.00% agreements to purchase/sell Total 44,362,339 4.29% 1,927,876 0.19% (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 224,056 7.3494 Purchase 223,311 7.3551 Purchase 433 7.3814 Purchase 137,029 7.3655 Purchase 25,675 7.0150 Purchase 209,893 7.3506 Purchase 2,861 7.3300 Purchase 46,097 7.3950 Purchase 6,027 7.3307 Purchase 16,783 7.3526 Purchase 103,945 7.0150 Purchase 7 Transfer Sale 6,660 7.3542 Sale 13,347 7.3576 Sale 25,675 7.0150 Sale 200,969 7.3580 Sale 3,812 7.3622 Sale 103,945 7.0150 Sale 1,879 7.3622 Sale 4,069 7.3622 Sale 11,934 7.3622 Sale 5,509 7.3622 Sale 19,619 7.3622 Sale 6,558 7.3622 Sale 103,945 7.0150 Sale 11,405 7.3620 Sale 44,940 7.3622 Sale 6,481 7.3622 Sale 2,012 7.3886 (b) Derivatives transactions (other than options) Product name, Long/Short Number of Price per (e.g. CFD) (Note 6) Securities unit (GBP) CFD Long 6660 7.3541 CFD Long 13347 7.3576 CFD Long 200969 7.358 CFD Long 2012 7.3885 CFD Short 6027 7.3306 CFD Short 224056 7.3493 CFD Short 209893 7.3506 CFD Short 16783 7.3526 CFD Short 223311 7.3551 CFD Short 137029 7.3654 CFD Short 433 7.3814 (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 11 April 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, 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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