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 
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:                            [phone]