Blocklisting - Interim Review

BLOCK LISTING SIX MONTHLY RETURN                        

Information provided on this form must be typed or printed electronically and
provided to an ris.

Date: 31 July 2013

Name of applicant:                     UNITED UTILITIES GROUP PLC              
                                                                               
Name of schemes:                       United Utilities Group 2008 Savings     
                                       related share Option Scheme, United     
                                       Utilities Group 2008 Performance Share  
                                       Plan, United Utilities Group 2008       
                                       Matching Share Award Plan, and the Long 
                                       Term Plan 2013                          
                                                                               
Period of return:            From:     01/02/2013      To:    31/07/2013       
                                                                               
Balance of unallotted securities under 9,492,815                               
scheme(s) from previous return:                                                
                                                                               
Plus: The amount by which the block    NIL                                     
scheme(s) has been increased since the                                         
date of the last return (if any                                                
increase has been applied for):                                                
                                                                               
Less: Number of securities issued/     NIL                                     
allotted under scheme(s) during period                                         
(see LR3.5.7G):                                                                
                                                                               
Equals: Balance under scheme(s) not    9,492,815                               
yet issued/allotted at end of period:                                          

Name of contact:                        Jane Gilmore                           
                                                                               
Telephone number of contact:            01925 237052