Additional Listing

Centrica PLC
28 April 2006


                                  Centrica plc

                              --------------------

Application has been made to the Financial Services Authority and the London
Stock Exchange Plc for a total of 25,000,000 ordinary shares of 6 14/81 pence 
each ('shares') to be admitted to the Official List.


It is expected that admission will be granted on 4 May 2006 and that trading
will commence 5 May 2006.


These shares are being reserved under a block listing and will be issued as a
result of the exercise of share options pursuant to the following scheme:


                                  Schemes                         Shares
Centrica Sharesave Scheme                                        25,000,000


When issued, these shares will rank pari passu with the existing ordinary
shares.





                      This information is provided by RNS
            The company news service from the London Stock Exchange