Transaction in Own Shares

Pennon Group PLC
27 July 2007

Pennon Group Plc

27 July 2007

Transaction in Own Shares


Pennon Group Plc announces that it has today purchased through Merrill Lynch
International 200,000 ordinary shares at a price of 596.7048 pence per share.

The purchased shares will all be held in treasury.  Following the above purchase
and non-cancellation of such equity shares, Pennon Group Plc will hold 2,253,448
ordinary shares in treasury and a total of 352,910,826 ordinary shares will be
in issue (excluding shares to be held in treasury).





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