Transaction in Own Shares

Centrica PLC
17 November 2005


17 November 2005


                                  Centrica plc
                              --------------------
                             Purchase of own shares
                             ----------------------

Centrica plc announces that it has today purchased for cancellation 750,000
Ordinary shares at an average price of 241.9617p per share via UBS Limited.


Enquiries

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

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