Holding(s) in Company

RNS Number : 3167D

Northumbrian Water Group PLC

12 September 2008

TR-1: Notifications of Major Interests in Shares

1. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached:

Northumbrian Water Group plc

2. Reason for notification (yes/no)

An acquisition or disposal of voting rights

Yes

An acquisition or disposal of financial instruments which may result in the acquisition of shares already issued to which voting rights are attached

An event changing the breakdown of voting rights

Other (please specify):______________

3. Full name of person(s) subject to notification obligation:

Legal & General Group plc (Group)

Legal & General Investment Management Limited (LGIM)

4. Full name of shareholder(s) (if different from 3):

Legal & General Group plc (L&G)

5. Date of transaction (and date on which the threshold is crossed or reached if different):

10 September 2008

6. Date on which issuer notified:

11 September 2008

7. Threshold(s) that is/are crossed or reached:

Above 5% (Group)

Above 5% (LGIM)

8: Notified Details
A: Voting rights attached to shares
Class/type of shares If possible use ISIN code	Situation previous to the triggering transaction		Resulting situation after the triggering transaction
	Number of shares	Number of voting rights	Number of shares	Number of voting rights		Percentage of voting rights
				Direct	Indirect	Direct	Indirect
ORD GBP 0.10 GB0033029744	Below 5%		26,744,146	23,482,782	3,261,364	4.527%	0.628%

B: Financial Instruments
Resulting situation after the triggering transaction
Type of financial instrument	Expiration date	Exercise/ conversion period/date	No. of voting rights that may be acquired (if the instrument exercised/converted)	Percentage of voting rights

Total (A+B)

Number of voting rights

Percentage of voting rights

26,744,146

5.15%

9. Chain of controlled undertakings through which the voting rights and /or the financial instruments are effectively held, if applicable:

Legal & General Group Plc (Direct and Indirect) (Group) (26,744,146 -5.15% = Total Position)
Legal & General Investment Management (Holdings) Limited (LGIMH) (Direct and Indirect) (26,744,146 -5.15% = Total Position)
Legal & General Investment Management Limited (Indirect) (LGIM) (26,744,146 -5.15% = Total Position)
Legal & General Group Plc (Direct) (L&G) (23,482,782 - 4.52% = LGAS, LGPL & PMC)
Legal & General Investment Management (Holdings) Limited (Direct) (LGIMHD) (PMC)	Legal & General Insurance Holdings Limited (Direct) (LGIH)
Legal & General Assurance (Pensions Management) Limited (PMC) (PMC)	Legal & General Assurance Society Limited (LGAS & LGPL)
	Legal & General Pensions Limited (Direct) (LGPL)