Holding(s) in Company

Pennon Group PLC
09 November 2006

PENNON GROUP PLC

FOR IMMEDIATE RELEASE

HOLDING IN COMPANY


Pennon Group Plc has received notification (by fax dated 9 November 2006) that
Lansdowne Partners Limited Partnership hold an interest in 23,996,903 Ordinary
Shares of 40.7p each in the Company.


9 November 2006

www.pennon-group.co.uk

End transmission


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