Transaction in Own Shares

Pennon Group PLC
25 June 2007

                                Pennon Group plc

                           Purchase of Own Securities



Pennon Group plc announces that on 25 June 2007 it purchased for cancellation
200,000 of its ordinary shares at a price of 607.1875 pence per share.




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