Holding(s) in Company

Northumbrian Water Group PLC
02 August 2005


                                  SCHEDULE 10

NOTIFICATION OF MAJOR INTERESTS IN SHARES

1) Name of company

Northumbrian Water Group plc.

2) Name of shareholder having a major interest

FMR Corp.

Parent holding company of Fidelity Management & Research Company (FMRCO),
investment manager for US mutual funds, and Fidelity Management Trust Company
(FMTC), a US state chartered bank which acts as trustee or investment manager of
various pension and trust accounts.

Fidelity International Limited (FIL).

Parent holding for various direct and indirect subsidiaries, being
non-beneficial holders, including Fidelity Investment Services Ltd (FISL),
Fidelity Gestion (FIGEST), Fidelity Investments Advisory (Korea) Limited (FIA(K)
L). Fidelity Investments Management (Hong Kong) Limited (FIMHK), Fidelity
Pension Management (FPM) and Fidelity Investments International (FII),
investment managers for various non-US investment companies and institutional
clients.

The notifiable interests also comprise the notifiable interest of Mr Edward C
Johnson 3d, a principal shareholder of FMR Corp. and Fidelity International
Limited.

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 2.

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

Registered Name                          Shares held   Management Company
STATE STREET BANK AND TR CO                  231,000   FICL
MELLON BANK                                   51,200   FMRCO
NORTHERN TRUST LONDON                        157,200   FMRCO
STATE STREET BANK AND TR CO                   64,000   FMRCO
BANK OF NEW YORK                             268,300   FMTC
BROWN BROTHERS HARRIMAN AND CO               810,300   FMTC
JP MORGAN CHASE BANK                         309,700   FMTC
NORTHERN TRUST CO                            289,400   FMTC
STATE STREET BANK AND TR CO                  746,100   FMTC
BROWN BROTHERS HARRIMAN LTD LUX           14,562,279   FIL
JP MORGAN BOURNEMOUTH                        220,837   FISL
JP MORGAN BOURNEMOUTH                         80,900   FIL
STATE STREET BANK AND TR CO LNDN             233,800   FIL
JP MORGAN BOURNEMOUTH                         47,600   FIL
MELLON BANK                                  186,400   FPM
JP MORGAN BOURNEMOUTH                         87,000   FPM
BANK OF NEW YORK BRUSSELS                     50,400   FPM
NORTHERN TRUST LONDON                        138,000   FIL
JP MORGAN BOURNEMOUTH                          8,900   FIL
DEXIA PRIVATBANK                              13,200   FPM
CHASE MANHATTAN BANK AG FRNKFRT               20,300   FPM
JP MORGAN BOURNEMOUTH                         97,800   FIL
NORTHERN TRUST LONDON                        528,000   FPM
JP MORGAN BOURNEMOUTH                      1,062,629   FPM
STATE STREET BANK AND TR CO LNDN              44,800   FIL
JP MORGAN BOURNEMOUTH                        380,200   FIL
BANK OF NEW YORK BRUSSELS                    170,600   FIL
JP MORGAN BOURNEMOUTH                         32,300   FIL
CHASE MANHATTAN BANK AG FRNKFRT               92,000   FPM
STATE STREET HONG KONG                        18,330   FIA(K)L
NORTHERN TRUST LONDON                        518,234   FPM
NATIONAL ASTL BK MELBOURNE                   115,100   FIL
NORTHERN TRUST LONDON                         66,285   FIL
STATE STREET BANK AND TR CO                  195,700   FPM
JP MORGAN BOURNEMOUTH                        107,900   FIL
JP MORGAN BOURNEMOUTH                        308,646   FISL
NATIONAL ASTL BK MELBOURNE                   487,700   FIL
JP MORGAN BOURNEMOUTH                         28,100   FPM
NORTHERN TRUST LONDON                         61,300   FIL
NORTHERN TRUST LONDON                         90,400   FPM
NORTHERN TRUST LONDON                          4,400   FIL
CHASE MANHATTAN LONDON                        15,500   FPM
JP MORGAN CHASE BANK                          62,100   FPM
                             TOTAL        23,064,840

5) Number of shares/amount of stock acquired

N/A

6) Percentage of issued class

N/A

7) Number of shares/amount of stock disposed
N/A

8) Percentage of issued class

N/A

9) Class of security

Ordinary shares of 10p.

10) Date of transaction

Not disclosed.

11) Date company informed

2 August 2005.

12) Total holding following this notification

23,064,840.

13) Total percentage holding of issued class following this notification

4.45%.

14) Any additional information

The notifiable interests include interest held on behalf of authorised unit
trust schemes in the U.K, notwithstanding the exemption from reporting pursuant
to section 209(1) (h) of the Companies Act 1985.

These notifications of disclosable interests constitute separate notifications
of interest in the shares and are combined solely for the purposes of clarity
and efficiency. Nothing herein should be taken to indicate that FMR Corp. and
its direct and indirect subsidiaries, Fidelity International Limited and its
direct and indirect subsidiaries or Mr Edward C Johnson 3d act as a group or in
concert in respect of the disclosed interests, or that they are required to
submit these notifications on a joint basis.
The disclosable interests arise under section 208(4)(b) of the Act, namely where
a person, not being the registered holder, is entitled to exercise a right
conferred by the holding of the shares or to control the exercise of such
rights, or under section 203 of the Act respectively.

15) Name of contact and telephone number for queries

Martin Parker, Company Secretary, 0191 301 6746.

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

Martin Parker, Company Secretary.

Date of notification
2 August 2005



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