Annual Information Update

UNITED UTILITIES GROUP PLC                                                     
                                                                               
ANNUAL INFORMATION UPDATE 3 JULY 2010 - 5 JULY                                 
2011                                                                           

Date of     Description of Document        Place of  Place where copy can be     
publication                                filing    obtained                    
                                                                                 
Various     Forms SH01 reflecting the      Companies Companies House             
            allotment of shares as a       House                                 
            result of the operation                                              
                                                                                 
            of the matching share plan and                                       
            executive share option scheme                                        
                                                                                 
05.07.10    United Utilities PLC -         UK        LSE's and company's website 
            Accounts available at Document Listing                               
            viewing facility               Authority                             
                                                                                 
07.07.10    Accounts filed to 31 March     Companies Companies House             
            2010                           House                                 
                                                                                 
14.07.10    Director/PDMR share interests  UK        LSE's and company's website 
            - Performance Share Plan and   Listing                               
            Matching Share Plan Awards     Authority                             
                                                                                 
20.07.10    Director/PDMR share interests  UK        LSE's and company's website 
            - SIP                          Listing                               
                                           Authority                             
                                                                                 
23.07.10    AGM and Trading Statement      UK        LSE's and company's website 
                                           Listing                               
                                           Authority                             
                                                                                 
26.07.10    AGM - Results of Poll          UK        LSE's and company's website 
                                           Listing                               
                                           Authority                             
                                                                                 
26.07.10    AGM - Resolutions passed       UK        LSE's and company's website 
                                           Listing                               
                                           Authority                             
                                                                                 
26.07.10    AGM - Resolutions passed       Companies Companies House             
                                           House                                 
                                                                                 
26.07.10    New Articles of Association    Companies Companies House             
                                           House                                 
                                                                                 
26.07.10    Form TM01 - Resignation of     Companies Companies House             
            Andrew Pinder                  House                                 
                                                                                 
30.07.10    Disposal of Meterfit Business  UK        LSE's and company's website 
                                           Listing                               
                                           Authority                             
                                                                                 
02.08.10    Total voting rights            UK        LSE's and company's website 
                                           Listing                               
                                           Authority                             
                                                                                 
02.08.10    Block Listing - Interim Review UK        LSE's and company's website 
                                           Listing                               
                                           Authority                             
                                                                                 
03.08.10    Director/PDMR share interests  UK        LSE's and company's website 
            - Matching Share Plan,         Listing                               
            Performance Share Plan,        Authority                             
            Deferred Share Plan, Retention                                       
            Awards and SIP - Dividend                                            
            Reinvestment                                                         
                                                                                 
03.08.10    Holding in company - Legal &   UK        LSE's and company's website 
            General - 4.23%                Listing                               
                                           Authority                             
                                                                                 
18.08.10    Director/PDMR share interests  UK        LSE's and company's website 
            - SIP                          Listing                               
                                           Authority                             
                                                                                 
01.09.10    Total voting rights            UK        LSE's and company's website 
                                           Listing                               
                                           Authority                             
                                                                                 
20.09.10    Director/PDMR share interests  UK        LSE's and company's website 
            - SIP                          Listing                               
                                           Authority                             
                                                                                 
23.09.10    Trading Statement              UK        LSE's and company's website 
                                           Listing                               
                                           Authority                             
                                                                                 
29.09.10    Appointment of new Chief       UK        LSE's and company's website 
            Financial Officer - Russ       Listing                               
            Houlden                        Authority                             
                                                                                 
29.09.10    Holding in company - Legal &   UK        LSE's and company's website 
            General - 3.94%                Listing                               
                                           Authority                             
                                                                                 
30.09.10    Charlie Cornish, MD Utility    UK        LSE's and company's website 
            Solutions to leave United      Listing                               
            Utilities                      Authority                             
                                                                                 
30.09.10    Director/PDMR share interests  UK        LSE's and company's website 
            - Matched Share Investment     Listing                               
            Scheme for Russ Houlden        Authority                             
                                                                                 
04.10.10    Correction - Director/PDMR     UK        LSE's and company's website 
            share interests - Matched      Listing                               
            Share Investment Scheme for    Authority                             
            Russ Houlden                                                         
                                                                                 
04.10.10    Form AP01 - Appointment of     Companies Companies House             
            Russ Houlden                   House                                 
                                                                                 
04.10.10    Form TM01 - Resignation of     Companies Companies House             
            Charlie Cornish                House                                 
                                                                                 
19.10.10    Director/PDMR share interests  UK        LSE's and company's website 
            - SIP                          Listing                               
                                           Authority                             
                                                                                 
01.11.10    Total voting rights            UK        LSE's and company's website 
                                           Listing                               
                                           Authority                             
                                                                                 
10.11.10    Non-Regulated Business         UK        LSE's and company's website 
            Disposal Programme Completion  Listing                               
                                           Authority                             
                                                                                 
19.11.10    Director/PDMR share interests  UK        LSE's and company's website 
            - SIP                          Listing                               
                                           Authority                             
                                                                                 
22.11.10    Philip Green, CEO to leave     UK        LSE's and company's website 
            United Utilities and Steve     Listing                               
            Mogford appointed as CEO       Authority                             
                                                                                 
23.11.10    Holding in company - Norges    UK        LSE's and company's website 
            Bank - 3.09%                   Listing                               
                                           Authority                             
                                                                                 
24.11.10    Half year 10/11 Announcement   UK        LSE's and company's website 
                                           Listing                               
                                           Authority                             
                                                                                 
25.11.10    Holding in company - Norges    UK        LSE's and company's website 
            Bank - 4.03%                   Listing                               
                                           Authority                             
                                                                                 
26.11.10    Regulatory announcement :      UK        LSE's and company's website 
            Listing Rule 9.6.13 - Steve    Listing                               
            Mogford                        Authority                             
                                                                                 
29.11.10    Holding in company - Deutsche  UK        LSE's and company's website 
            Bank AG - 6.22%                Listing                               
                                           Authority                             
                                                                                 
01.12.10    Director/PDMR share interests  UK        LSE's and company's website 
            - G Kenyon - Sale of ordinary  Listing                               
            shares                         Authority                             
                                                                                 
03.12.10    Holding in company - Invesco   UK        LSE's and company's website 
            Limited - 0.45%                Listing                               
                                           Authority                             
                                                                                 
09.12.10    Holding in company - Deutsche  UK        LSE's and company's website 
            Bank AG - 5.56%                Listing                               
                                           Authority                             
                                                                                 
16.12.10    Director/PDMR share interests  UK        LSE's and company's website 
            - Russ Houlden - Matching      Listing                               
            element of Matched Share       Authority                             
            Investment Scheme                                                    
                                                                                 
17.12.10    Holding in company - Deutsche  UK        LSE's and company's website 
            Bank AG - Below 3%             Listing                               
                                           Authority                             
                                                                                 
20.12.10    Director/PDMR share interests  UK        LSE's and company's website 
            - SIP                          Listing                               
                                           Authority                             
                                                                                 
04.01.11    Total voting rights            UK        LSE's and company's website 
                                           Listing                               
                                           Authority                             
                                                                                 
05.01.11    Form AP01 - Appointment of     Companies Companies House             
            Steve Mogford                  House                                 
                                                                                 
12.01.11    Key Dates 2011                 UK        LSE's and company's website 
                                           Listing                               
                                           Authority                             
                                                                                 
18.01.11    Director/PDMR share interests  UK        LSE's and company's website 
            - SIP                          Listing                               
                                           Authority                             
                                                                                 
26.01.11    Interim Management Statement   UK        LSE's and company's website 
                                           Listing                               
                                           Authority                             
                                                                                 
31.01.11    Block Listing - Interim Review UK        LSE's and company's website 
                                           Listing                               
                                           Authority                             
                                                                                 
03.02.11    Director/PDMR share interests  UK        LSE's and company's website 
            - Dividend Reinvestment within Listing                               
            share plans                    Authority                             
                                                                                 
15.02.11    Director/PDMR share interests  UK        LSE's and company's website 
            - P N Green - Special Long     Listing                               
            Term Incentive Scheme Exercise Authority                             
                                                                                 
18.02.11    Director/PDMR share interests  UK        LSE's and company's website 
            - SIP                          Listing                               
                                           Authority                             
                                                                                 
01.03.11    Appointment of Dr Catherine    UK        LSE's and company's website 
            Bell to the Remuneration       Listing                               
            Committee                      Authority                             
                                                                                 
16.03.11    Director/PDMR share interests  UK        LSE's and company's website 
            - S L Mogford - Purchase of    Listing                               
            ordinary shares as part        Authority                             
            Special Long Term Incentive                                          
            Scheme                                                               
                                                                                 
18.03.11    Director/PDMR share interests  UK        LSE's and company's website 
            - Dr C Bell - Purchase of      Listing                               
            ordinary shares                Authority                             
                                                                                 
18.03.11    Director/PDMR share interests  UK        LSE's and company's website 
            - SIP                          Listing                               
                                           Authority                             
                                                                                 
24.03.11    Pre-Close Trading Statement    UK        LSE's and company's website 
                                           Listing                               
                                           Authority                             
                                                                                 
28.03.11    Director/PDMR share interests  UK        LSE's and company's website 
            - PN Green - Sale of ordinary  Listing                               
            shares                         Authority                             
                                                                                 
30.03.11    Director/PDMR share interests  UK        LSE's and company's website 
            - Russ Houlden - Award of      Listing                               
            Performance Share Plan         Authority                             
                                                                                 
31.03.11    Form TM02 - Resignation of Tom Companies Companies House             
            Keevil as Company Secretary    House                                 
                                                                                 
31.03.11    Form AP03 - Appointment of     Companies Companies House             
            Simon Gardiner as Company      House                                 
            Secretary                                                            
                                                                                 
31.03.11    Form TM01 - Resignation of     Companies Companies House             
            Philip Green                   House                                 
                                                                                 
31.03.11    UUG - UUW - Common Board       UK        LSE's and company's website 
            Directors                      Listing                               
                                           Authority                             
                                                                                 
01.04.11    Total voting rights            UK        LSE's and company's website 
                                           Listing                               
                                           Authority                             
                                                                                 
06.04.11    Director/PDMR share interests  UK        LSE's and company's website 
            - SIP                          Listing                               
                                           Authority                             
                                                                                 
27.04.11    Annual Return                  Companies Companies House             
                                           House                                 
                                                                                 
28.04.11    Holding in company - Norges    UK        LSE's and company's website 
            Bank - 3.94%                   Listing                               
                                           Authority                             
                                                                                 
03.05.11    Total voting rights            UK        LSE's and company's website 
                                           Listing                               
                                           Authority                             
                                                                                 
18.05.11    Director/PDMR share interests  UK        LSE's and company's website 
            - SIP                          Listing                               
                                           Authority                             
                                                                                 
26.05.11    Announcement of Final Results  UK        LSE's and company's website 
            for year ending 31 March 2011  Listing                               
                                           Authority                             
                                                                                 
27.05.11    Director/PDMR share interests  UK        LSE's and company's website 
            - S L Mogford - Purchase of    Listing                               
            ordinary shares as part        Authority                             
            Special Long Term Incentive                                          
            Scheme                                                               
                                                                                 
01.06.11    Total voting rights            UK        LSE's and company's website 
                                           Listing                               
                                           Authority                             
                                                                                 
14.06.11    Auditor's Resignation          Companies Companies House             
                                           House                                 
                                                                                 
20.06.11    Director/PDMR share interests  UK        LSE's and company's website 
            - SIP                          Listing                               
                                           Authority                             
                                                                                 
20.06.11    Accounts available at National UK        LSE's and company's website 
            Storage Mechanism and          Listing                               
            Company's website              Authority                             
                                                                                 
30.06.11    Accounts filed to 31 March     Companies Companies House             
            2011                           House                                 
                                                                                 
01.07.11    Total voting rights            UK        LSE's and company's website 
                                           Listing                               
                                           Authority                             
                                                                                 
04.07.11    United Utilities Water PLC -   UK        LSE's and company's website 
            Accounts available at National Listing                               
            Storage Mechanism and          Authority                             
            Company's Website                                                    
                                                                                 
05.07.11    Annual Information Update      UK        LSE's and company's website 
                                           Listing                               
                                           Authority