Holding(s) in Company

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 Group PLC
of existing shares to which voting rights are
attached: ii

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                        Pictet Asset Management SA
the notification obligation: iii

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

5. Date of the transaction and date on                                 29 October 2009
which the threshold is crossed or
reached: v

6. Date on which issuer notified:                                     03 November 2009

7. Threshold(s) that is/are crossed or                                      (Below) 5%
reached: vi, vii
 
8. Notified details:

A: Voting rights attached to shares viii, ix

Class/type of            Situation previous                            Resulting situation after
shares                    to the triggering                            the triggering transaction
                             transaction
 
if possible
using
the ISIN CODE
                      Number            Number          Number            Number of            % of voting
                        of                of           of shares           voting                rights x
                      Shares            Voting                             rights
                                        Rights

                                                        Direct        Direct xi   Indirect    Direct   Indirect
                                                         xii
Ordinary Shares        N/A            38,985,705          0               0     34,044,411      0        4.995%
 
GB00B39J2M42
 
B: Qualifying Financial Instruments

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

Resulting situation after the triggering transaction

  Type of financial     Exercise   Expiration         Exercise/         Number of voting rights      % of voting
      instrument         price      date xvii     Conversion period      instrument refers to      rights xix, xx
                                                        xviii
                                                                                                   Nominal   Delta
 
Total (A+B+C)

Number of voting rights                                          Percentage of voting rights

34,044,411                                                       4.995%
 
9. Chain of controlled undertakings through which the voting rights and/or the
financial instruments are effectively held, if applicable: xxi
 
Pictet Global Select Fund - Global Utilities Equity Fund, 19,723,723 (2.89%)
 
Proxy Voting:

10. Name of the proxy holder:                             Pictet Asset Management SA

11. Number of voting rights proxy holder will cease                   Not Applicable
to hold:

12. Date on which proxy holder will cease to hold                     Not Applicable
voting rights:

 
13. Additional information:                                           Not Applicable

14. Contact name:                                            David Cawthrow, Head of
                                                                          Compliance

15. Contact telephone number:                                   [phone]