Holding(s) in Company

Northumbrian Water Group PLC
02 September 2003

                                  SCHEDULE 10

                   NOTIFICATION OF MAJOR INTERESTS IN SHARES


1.     Name of company

       Northumbrian Water Group plc

2.     Name of shareholder having a major interest

       Amvescap plc

3.     Please state whether notification indicates that it is in respect of
       holding of the shareholder named in 2 above or in respect of a non-
       beneficial interest or in the case of an individual holder if it is a 
       holding of that person's spouse or children under the age of 18.

       Non-beneficial interest.  Subsidiary companies of Amvescap have a large
       number of portfolio management clients for whom they act as investment
       manager and investment advisor and by virtue of Section 203 of the 
       Companies Act 1985 Amvescap is deemed to have the same interest in the 
       shares.

4.     Name of the registered holder(s) and, if more than one holder, the number 
       of shares held by each of them

          61,550,000   - Vidacos Nominees Limited*
           8,956,000   - HSBC Nominees Limited
           3,330,000   - Bank of New York Nominees Limited
           3,395,000   - Chase Nominees Limited
           1,225,000   -  Northern Trust Nominees Limited
               2,000   -  CM Investment Nominees Limited

        *  This holding includes the following:  Invesco Perpetual High Income 
        Fund holds 35,700,000 (6.88%)

5.     Number of shares/amount of stock acquired

       1,290,000

6.     Percentage of issued class

       0.2%

7.     Number of shares/amount of stock disposed

       N/A

8.     Percentage of issued class

       N/A

9.     Class of security

       Ordinary 10p Shares

10.    Date of transaction

       1st September 2003

11.    Date company informed

       2nd September 2003

12.    Total holding following this notification

       78,458,000

13.    Total percentage holding of issued class following this notification

       15.13%

14.    Any additional information

15.    Name of contact and telephone number for queries

       Martin Parker 0191 301 6746

16.    Name and signature of authorised company official responsible for making 
       this notification.

       Martin Parker, Company Secretary

Date of notification:   2nd September 2003




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