Holding(s) in Company

Northumbrian Water Group PLC
31 August 2004


                                  SCHEDULE 10

                   NOTIFICATION OF MAJOR INTERESTS IN SHARES

  1.  Name of company

      Northumbrian Water Group plc

  2.  Name of shareholder having a major interest

      INVESCO UK ICVC Series

  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.
      As above

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

  5.  Number of shares/amount of stock acquired

      1,132,221

  6.  Percentage of issued class

      Not stated

  7.  Number of shares/amount of stock disposed

      Not stated

  8.  Percentage of issued class

      Not stated

  9.  Class of security

      Ordinary 10p Shares

 10.  Date of transaction

      27 August 2004

 11.  Date company informed

      31 August 2004

 12.  Total holding following this notification

      67,435,931

 13.  Total percentage holding of issued class following this notification

      13%

 14.  Any additional information

 15.  Name of contact and telephone number for queries

      Martin Parker 0191 3016704

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

      Martin Parker, Company Secretary

Date of notification: 31 August 2004


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