Holding(s) in Company

Northumbrian Water Group PLC
29 April 2005


                  Northumbrian Water Group plc (the "Company")


                   Holding in Company (change in particulars)


In accordance with Section 202(4) of the Companies Act 1985, the Company was
notified on 28 April 2005 of a change in the particulars disclosed in an earlier
notification (the "Notification") received from Ontario Teachers' Pension Plan
Board on 21 April 2005 (RNS Number : 4297L).


The identity of the registered holder of the 129,655,961 shares of the Company
to which the notification relates is State Street Nominees Ltd ACCT NP3A. This
holding represents 25% of the issued share capital of the Company.


Name of contact and telephone number for queries.


Martin Parker

Company Secretary

Tel: [phone]






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