Holding(s) in Company

Pennon Group PLC
22 February 2006

PENNON GROUP PLC



FOR IMMEDIATE RELEASE



HOLDING IN COMPANY




Pennon Group Plc has received notification (by fax dated 21 February 2006) that
AXA S.A. and its Group Companies held an interest at 20 February 2006 in
5,373,256 Ordinary Shares of 1221/10p each in the Company, representing 4.53% of
the issued share capital.



22 February 2006

www.pennon-group.co.uk



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