Transaction in Own Shares

Centrica PLC
18 May 2005


Centrica plc

Repurchase of shares

Centrica plc announces that on 18 May 2005 it purchased for cancellation 900,000
of its ordinary shares at a price of 227.5479p 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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