Transaction in Own Shares

Centrica PLC
10 June 2005

Centrica plc

Repurchase of shares

Centrica plc announces that on 10 June 2005 it purchased for cancellation
1,000,000 of its ordinary shares at a price of 222.9628 p per share from
JPMorgan Cazenove Limited

Enquiries

Kath Kyle  Centrica plc   01753 494902

Jonathan Wilcox  JPMorgan Cazenove Limited  020 7588 2828



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