Holding(s) in Company

TR-1 :               notification of major interests in shares

1.Identity of the issuer or the underlying issuer of     United Utilities    
existing shares to which voting rights are attached :    Group PLC           
                                                                             
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 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 the notification     Tradewinds Global  
obligation :                                                Investors, LLC   
                                                                             
                                                          NWQ Holdings, LLC  
                                                                             
                                                         Nuveen Investments, 
                                                                 Inc.        
                                                                             
                                                              Windy City     
                                                          Investments, Inc.  
                                                                             
                                                              Windy City     
                                                             Investments     
                                                            Holdings, LLC    
                                                                             
                                                         MDCP Holdco (Windy),
                                                                 LLC         
                                                                             
                                                           Madison Dearborn  
                                                           Capital Partners  
                                                              V-A, L.P.      
                                                                             
                                                           Madison Dearborn  
                                                           Capital Partners  
                                                              V-C, L.P.      
                                                                             
                                                           Madison Dearborn  
                                                          Capital Partners V 
                                                          Executive-A, L.P.  
                                                                             
                                                           Madison Dearborn  
                                                         Partners V-A&C, L.P.
                                                                             
4. Full name of shareholder(s) (if different from 3.) :                      
                                                                             
5. Date of the transaction (and date on which the            16 June 2010    
threshold is crossed or reached if different) :                              
                                                                             
6. Date on which issuer notified:                            17 June 2010    
                                                                             
7. Threshold(s) that is/are crossed or reached:                   2%         
                                                                             
8. Notified details:                                                         
                                                                             

A: Voting rights attached to shares                                             
                                                                                
Class/type   Situation previous to   Resulting situation after the triggering   
of shares    the triggering          transaction                                
             transaction                                                        
 if possible                                                                    
using the    Number  Number of       Number of Number of voting  % of voting    
ISIN CODE    of      Voting Rights   shares    rights ix         rights         
             Shares  viii                                                       
                                                                                
                                     Direct    Direct  Indirect  Direct Indirect
                                               x       xi                       
                                                                                
US91311E1029 9,052,980               8,683,290         8,683,290           2.55%
                                                                                
GB00B39J2M42 3,385,051                       0                 0              0%
                                                                                

B: Financial Instruments                                                      
                                                                              
Resulting situation after the triggering transaction xii                      
                                                                              
Type of    Expiration Exercise/      Number of voting rights that may  % of   
financial  date xiii  Conversion     be acquired if the instrument is  voting 
instrument            Period/ Date   exercised/ converted.             rights 
                      xiv                                                     
                                                                              
      N/A                                                                     
                                                                              

 

Total (A+B)                                                                   
                                                                              
Number of voting rights                                                 % of      
                                                                      voting    
                                                                      rights    
                                                                              
 17,366,580 (this total represents total ADRs converted into            2.55% 
Ordinary share equivalents in addition to Ordinary shares held 1              
ADR=2 ORDs)                                                                   
                                                                              

 

9. Chain of controlled undertakings through which the voting rights and/or the 
financial instruments are effectively held, if applicable xv:                  
                                                                               
The voting rights are held by Tradewinds Global Investors, LLC which is        
controlled by NWQ Holdings, LLC, which is in turn controlled by Nuveen         
Investments, Inc, which is in turn controlled by Windy City Investments, Inc., 
which is in turn controlled by Windy City Investments Holdings, L.L.C., which  
is in turn controlled by MDCP Holdco (Windy), LLC, which is in turn controlled 
by Madison Dearborn Partners V-A&C, L.P. through its management of various     
private equity funds:  Madison Dearborn Capital Partners V-A, L.P., Madison    
Dearborn Capital Partners V-C, L.P., and Madison Dearborn Capital Partners V   
Executive-A, L.P.                                                              
                                                                               

 

Proxy Voting:                                                                    
                                                                                 
10. Name of the proxy holder:                                                    
                                                                                 
11. Number of voting rights proxy holder will cease to hold:                     
                                                                                 
12. Date on which proxy holder will cease to hold voting rights:                 
                                                                                 

 

13. Additional information:                
                                           
14. Contact name:             Macfarlanes  
                                           
15. Contact telephone number: 020 7831 9222
                                           

 

 

 

  

              This form is to be sent to the issuer or underlying issuer and to
be filed with the competent authority.

               Either the full name of the legal entity or another method for
identifying the issuer or underlying issuer, provided it is reliable and
accurate.

              This should be the full name of (a) the shareholder; (b) the
person acquiring, disposing of or exercising voting rights in the cases
provided for in DTR5.2.1 (b) to (h);  (c) all the parties to the agreement
referred to in DTR5.2.1 (a), or (d) the direct or indirect holder of financial
instruments entitled to acquire shares already issued to which voting rights
are attached, as appropriate.

In relation to the transactions referred to in points DTR5.2.1 (b) to (h), the
following list is provided as indication of the persons who should be
mentioned:

-               in the circumstances foreseen in  DTR5.2.1 (b), the person that
acquires the voting rights and is entitled to exercise them under the agreement
and the natural person or legal entity who is transferring temporarily for
consideration the voting rights;

-               in the circumstances foreseen in DTR 5.2.1 (c), the person
holding the collateral, provided the person or entity controls the voting
rights and declares its intention of exercising them, and person lodging the
collateral under these conditions;

-               in the circumstances foreseen in DTR5.2.1(d), the person who
has a life interest in shares if that person is entitled to exercise the voting
rights attached to the shares and the person who is disposing of the voting
rights when the life interest is created;

-               in the circumstances foreseen in DTR5.2.1 (e), the parent
undertaking and, provided it has a notification duty at an individual level
under DTR 5.1, under DTR5.2.1 (a) to (d) or under a combination of any of those
situations, the controlled undertaking;

-               in the circumstances foreseen in DTR5.2.1 (f), the deposit
taker of the shares, if he can exercise the voting rights attached to the
shares deposited with him at his discretion, and the depositor of the shares
allowing the deposit taker to exercise the voting rights at his discretion;

-               in the circumstances foreseen in DTR5.2.1 (g), the person  that
controls the voting rights;

-               in the circumstances foreseen in DTR5.2.1 (h), the proxy
holder, if he can exercise the voting rights at his discretion, and the
shareholder who has given his proxy to the proxy holder allowing the latter to
exercise the voting rights at his discretion.

              Applicable in the cases provided for in DTR 5.2.1 (b) to (h).
This should be the full name of the shareholder or holder of financial
instruments who is the counterparty to the natural person or legal entity
referred to in DTR5.2.

               The date of the transaction should normally be, in the case of
an on exchange transaction, the date on which the matching of orders occurs; in
the case of an off exchange transaction, date of the entering into an
agreement. 

The date on which threshold is crossed should normally be the date on which the
acquisition, disposal or possibility to exercise voting rights takes effect
(see DTR 5.1.1R (3)). For passive crossings, the date when the corporate event
took effect. [DEL::DEL]

These dates will usually be the same unless the transaction is subject to a
condition beyond the control of the parties.

              Please refer to the situation disclosed in the previous
notification, In case the situation previous to the triggering transaction was
below 3%, please state 'below 3%'.

viiIf the holding has fallen below the minimum threshold , the notifying party
should not be obliged to disclose the extent of the holding, only that the new
holding is less than 3%.

 For the case provided for in DTR5.2.1(a), there should be no disclosure of
individual holdings per party to the agreement unless a party individually
crosses or reaches an Article 9 threshold. This applies upon entering into,
introducing changes to or terminating an agreement.

viii                   Direct and indirect

ix              In case of combined holdings of shares with voting rights
attached 'direct holding' and voting rights 'indirect holdings', please split
the voting rights number and percentage into the direct and indirect columns-if
there is no combined holdings, please leave the relevant box blank.

X              Voting rights attached to shares in respect of which the
notifying party is a direct shareholder  (DTR 5.1)

xi                     Voting rights held by the notifying party as an indirect
shareholder (DTR 5.2.1)

xii            If the holding has fallen below the minimum threshold, the
notifying party should not be obliged to disclose the extent of the holding,
only that the new holding is below 3%.

xiii             date of maturity / expiration of the finical instrument i.e.
the date when the right to acquire shares ends.

xiv                   If the financial instrument has such a period-please
specify the period- for example once every three months starting from the
[date]

xv             The notification should include the name(s) of the controlled
undertakings through which the voting rights are held. The notification should
also include the amount of voting rights and the percentage held by each
controlled undertaking, insofar as individually the controlled undertaking
holds 3% or more, and insofar as the notification by the parent undertaking is
intended to cover the notification obligations of the controlled undertaking.

xvi             This annex is only to be filed with the competent authority.

xvii            Whenever another person makes the notification on behalf of the
shareholder or the natural person/legal entity  referred to in DTR5.2 and
DTR5.3.