Transaction in Own Shares

Centrica PLC
21 November 2005


21 November 2005
                                  Centrica plc

                              --------------------
                             Purchase of own shares
                             ----------------------

Centrica plc announces that it has today purchased for cancellation 1,441,725
Ordinary shares at an average price of 240.0665p per share via UBS Limited.

Enquiries

Centrica Investor Relations            01753 494900
UBS Limited  Jos Trusted              020 7567 8000


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