| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Astralise Ltd | 02226852 | 31/12/1997 | Dissolved |
| Edwards & Jones (Holdings) Ltd | 01591571 | 31/12/1997 | Dissolved |
| First Choice Electricity Ltd | 03088766 | 31/12/1997 | Dissolved |
| First Choice Energi Ltd | 03088779 | 31/12/1997 | Dissolved |
| First Choice Gas Ltd | 03089176 | 31/12/1997 | Dissolved |
| First Choice Power Ltd | 03088742 | 31/12/1997 | Dissolved |
| Grainsmith Ltd | 02442479 | 31/12/1997 | Dissolved |
| North West Utilities Group Ltd | 02911183 | 31/12/1997 | Dissolved |
| North West Water Group Ltd | 02911184 | 31/12/1997 | Dissolved |
| Norweb Nominees Eire Ltd | 02373488 | 31/12/1997 | Dissolved |
| Rawdon Ltd | 01449312 | 31/12/1997 | Dissolved |
| United Utilities Holdings (No.2) Ltd | 02816766 | 31/12/1997 | Dissolved |
| United Utilities International (Holdings) Ltd | 02344586 | 31/12/1997 | Dissolved |
| Wallace & Tiernan (Tonbridge) Ltd | 02355896 | 31/12/1997 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AMEY METERING LIMITED | 03131192 | 31/12/1997 | 01/06/2000 | Bronze |
| INTERCELL COMMUNICATIONS LIMITED | 02368803 | 30/01/2000 | 08/03/2001 | Dissolved |
| NB LEASING LIMITED | 02377523 | 31/12/1997 | 01/06/2000 | Dissolved |
| NB PROPERTY AND ESTATE SERVICES NO.1 LIMITED | 02373209 | 31/12/1997 | 01/06/2000 | Dissolved |
| NB REAL ESTATE NO.1 LIMITED | 02377739 | 31/12/1997 | 01/06/2000 | Dissolved |
| NETFORCE GROUP LIMITED | 03134936 | 04/09/2000 | 08/03/2001 | Dissolved |
| NOR.WEB DPL LIMITED | 03481529 | 01/05/1998 | 21/09/1998 | Dissolved |
| Nb Share Scheme Trustees Ltd | 02525003 | 31/12/1997 | 01/06/2000 | Dissolved |
| Nominee Services Ltd | 02930072 | 31/12/1997 | 01/06/2000 | Dissolved |
| SOUTH WEST STORES LIMITED | 02379722 | 27/08/1997 | 01/06/2000 | Dissolved |
| SSE POWER LIMITED | 02372114 | 26/02/1997 | 12/09/1997 | Dissolved |
| UNITED UTILITIES (DORMANT SUBSIDIARIES) LIMITED | 02379714 | 31/12/1997 | 01/06/2000 | Dissolved |
| UNITED UTILITIES (ESPS) PENSIONS TRUSTEE LIMITED | 02380227 | 09/09/1998 | 01/03/2000 | Dissolved |
| UNITED UTILITIES CONTRACT SOLUTIONS HOLDINGS LIMITED | 02381766 | 09/09/1998 | 01/06/2000 | Dissolved |
| UNITED UTILITIES FINANCE HOLDINGS LIMITED | 03203278 | 31/12/1997 | 01/06/2000 | Dissolved |
| UNITED UTILITIES HOLDINGS TRUSTEE LIMITED | 02816762 | 31/12/1997 | 01/06/2000 | Dissolved |
| UNITED UTILITIES INTERNATIONAL LIMITED | 02344587 | 01/04/1998 | 08/03/2001 | Gold |
| UNITED UTILITIES NOMINEES LIMITED | 02380261 | 31/12/1997 | 01/06/2000 | Dissolved |
| UNITED UTILITIES ONE LIMITED | 03308286 | 31/12/1997 | 01/06/2000 | Dissolved |
| UNITED UTILITIES PROPERTY SERVICES LIMITED | 02380021 | 09/09/1998 | 01/06/2000 | Gold |
| UNITED UTILITIES PROPERTY SOLUTIONS (10010) LIMITED | 02377886 | 06/12/1999 | 01/06/2000 | Dissolved |
| UNITED UTILITIES TOTAL SOLUTIONS LIMITED | 02380133 | 09/09/1998 | 01/06/2000 | One Red Flag |
| UNITED UTILITIES US INVESTMENTS LIMITED | 02380134 | 31/12/1997 | 01/06/2000 | Dissolved |
| UNITED UTILITIES UTILITY SOLUTIONS LIMITED | 02268728 | 31/12/1997 | 01/06/2000 | Dissolved |
| VEOLIA WATER OPERATIONAL SERVICES (TAY) LIMITED | 03354180 | 31/12/1997 | 08/11/1999 | Silver |
| VEOLIA WATER SOLUTIONS INDUSTRIAL OUTSOURCING UK LIMITED | 02917042 | 31/12/1997 | 01/06/2000 | Dissolved |
| VODAFONE ENTERPRISE CORPORATE SECRETARIES LIMITED | 02303594 | 30/01/2000 | 08/03/2001 | Silver |