Holding(s) in Company

21st Oct 2011 15:13

For filings with the FSA include the annex For filings with issuer exclude the annex

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi

1. Identity of the issuer or the underlying issuer United Utilities of existing shares to which voting rights are Group Plc attached:ii GB00B39J2M42

2 Reason for the notification (please tick the appropriate box or boxes): An acquisition or disposal of voting rights

X

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

An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments An event changing the breakdown of voting rights

Other (please specify):

3. Full name of person(s) subject to the Norges

Bank notification obligation:iii

4. Full name of shareholder(s) N/A

(if different from 3.):iv

5. Date of the transaction and date on which the threshold is crossed or 20th October 2011 reached: v 6. Date on which issuer notified: 21th

October 2011

7. Threshold(s) that is/are crossed or 3%

reached: vi, vii 8. Notified details:

A: Voting rights attached to shares viii, ix Class/type Situation previous Resulting situation after the triggering transaction of to the triggering shares transaction Number Number Number Number of voting % of voting rights x if possible of of of shares rights using Shares Voting the ISIN Rights Direct Direct xi Indirect Direct Indirect CODE xii 20,856,084 20,856,084 20,383,084 20,383,084 2.99% GB00B39J2M42

B: Qualifying Financial Instruments Resulting situation after the triggering transaction

Type of Expiration Exercise/ Number of voting % of voting financial date xiii Conversion Period xiv rights that may be rights instrument acquired if the instrument is exercised/ converted. N/A N/A N/A N/A N/A C: Financial Instruments with similar economic effect to Qualifying Financial Instruments xv, xvi

Resulting situation after the triggering transaction Type of Exercise price Expiration Exercise/ Number of voting rights % of voting rights financial date xvii Conversion instrument refers to xix, xx instrument period xviii N/A N/A N/A N/A N/A Nominal Delta N/A N/A Total (A+B+C) Number of voting rights Percentage of voting rights 20,383,084 2.99%

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

N/A Proxy Voting: 10. Name of the proxy holder: Norges Bank

11. Number of voting rights proxy holder will cease N/A

to hold:

12. Date on which proxy holder will cease to hold N/A

voting rights: 13. Additional information: None 14. Contact name: Stanislav Boiadjiev 15. Contact telephone number: +47 24 07 31 42

PINX

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Related Shares:

United Utilities