Transaction in Own Shares

Centrica PLC
18 August 2005


Centrica plc

Repurchase of shares

Centrica plc announces that on 18 August 2005 it purchased for cancellation
920,000 of its ordinary shares at a price of 236.9180p per share from Hoare
Govett's affiliate, ABN AMRO Bank N.V. London Branch.


Enquiries
Kath Kyle           Centrica plc                          01753 494902
Jeremy Thompson     ABN AMRO Bank N.V. London Branch      020 7678 8000



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