Holding(s) in Company

Pennon Group PLC
11 October 2006

PENNON GROUP PLC



FOR IMMEDIATE RELEASE


HOLDING IN COMPANY


Pennon Group Plc has received notification (by fax received 10 October 2006)
that Lansdowne Partners Limited Partnership hold an interest in 24,551,877
Ordinary Shares of 40.7p each in the Company.




11 October 2006


www.pennon-group.co.uk


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