Transaction in Own Shares

Centrica PLC
30 December 2004

Centrica plc



Close Period Share Repurchase Programme



Centrica plc ('Centrica') announces today that it will commence an irrevocable,
non-discretionary programme to purchase Centrica Ordinary Shares on its own
behalf, for cancellation during its close period which commences on 1st January
2005 and ends on 23rd February 2005.


Any acquisitions will be effected within certain pre-set parameters and in
accordance with both Centrica's general authority to repurchase shares and
Chapter 15 of the Listing Rules, which requires that the maximum price paid be
limited to no more than 105 per cent of the average middle market closing price
of Centrica Ordinary Shares for the five dealing days preceding the date of
purchase.





Enquiries



Kath Kyle                  Centrica plc                     01753 494902




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