Holding(s) in Company

Northumbrian Water Group PLC
31 October 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

Barclays 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

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
Barclays Capital Nominees LIMI                                         790,846
Barclays Trust Co as Exec/Adm                                              850
BNP Paribas                                                            100,847
Boiss Nominees Ltd 4224361                                             160,240
Chase Nominees Ltd 16376                                               216,689
Chase Nominees Ltd 20947                                            13,092,368
Chase Nominees Ltd 21359                                               667,306
Chase Nominees Ltd 28270                                               150,040
Chase Nominees Ltd 28270                                               282,942
CIBC Mellon Global Securities                                           58,965
Investors Bank and Trust Co                                            365,777
Investors Bank and Trust Co                                          1,147,650
Investors Bank and Trust Co                                             90,710
Investors Bank and Trust Co                                          2,994,042
Investors Bank and Trust Co                                             36,623
JP Morgan (BGI Custody) 16331                                          131,276
JP Morgan (BGI Custody) 16341                                          214,761
JP Morgan (BGI Custody) 16341                                          494,911
JP Morgan (BGI Custody) 16344                                          190,107
JP Morgan (BGI Custody) 16345                                          305,824
JP Morgan (BGI Custody) 16400                                        3,833,492
JP Morgan (BGI Custody) 18409                                          299,767
JP Morgan Chase Bank                                                   126,198
JP Morgan Chase Bank                                                    46,138
JP Morgan Chase Bank                                                    36,028
JP Morgan Chase Bank                                                   601,415
Mellon Trust US Custodian                                              143,250
Mellon Trust of New England                                            174,267
Northern Trust Bank - BGI SEPA                                          48,472
Northern Trust Bank - BGI SEPA                                         220,788
Northern Trust Bank - BGI SEPA                                         193,217
R C Greig Nominees Ltd RCI                                              34,500
R C Greig Nominees Ltd BL1                                               2,815
R C Greig Nominees Ltd CM1                                               4,440
State Street Bank & Trust - WI                                          84,815
State Street Trust of Canada                                            67,947
                                                TOTAL               27,410,323

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

31 October 2005.

12) Total holding following this notification

27,410,323.

13) Total percentage holding of issued class following this notification

5.29%.

14) Any additional information

None disclosed.

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

31 October 2005.




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