| Name | Company Number | Date Appointed | Rating |
|---|
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ACCELERATING GROWTH FUND LTD | 04698093 | 25/06/2003 | 12/05/2008 | Silver |
| AGA RANGEMASTER GROUP LIMITED | 00354715 | 27/07/2000 | 09/05/2008 | Bronze |
| Aqua'lity Water Ltd | 02231371 | 14/12/1992 | 30/10/2000 | Dissolved |
| EAST WORCESTER WATER LIMITED | 02757948 | 26/03/1993 | 30/10/2000 | Silver |
| MODERN WASTE LIMITED | 06218323 | 13/12/2007 | 30/10/2008 | Dissolved |
| Process Water Direct Ltd | 01699395 | 14/12/1992 | 30/10/2000 | Dissolved |
| R T Group Plc | 02904614 | 01/04/1999 | 18/10/2002 | Dissolved |
| SEVERN TRENT OVERSEAS HOLDINGS LIMITED | 02455508 | 30/04/1995 | 30/10/2000 | Silver |
| SEVERN TRENT PLC | 02366619 | 01/04/1992 | 30/10/2000 | Silver |
| SEVERN TRENT SERVICES INTERNATIONAL LIMITED | 02387816 | 22/10/1992 | 17/02/2000 | Silver |
| SEVERN TRENT SERVICES PURIFICATION LIMITED | 02409826 | 01/05/1996 | 30/10/2000 | Dissolved |
| SEVERN TRENT SYSTEMS LIMITED | 02394552 | 01/02/1996 | 30/10/2000 | Dissolved |
| SEVERN TRENT UTILITIES FINANCE PLC. | 02914860 | 25/03/1994 | 30/10/2000 | Amber |
| SEVERN TRENT WATER LIMITED | 02366686 | 22/08/1992 | 30/10/2000 | Silver |
| THE WASTE AND RESOURCES ACTION PROGRAMME | 04125764 | 11/12/2000 | 12/05/2008 | Dissolved |
| UTILITIES AND SERVICE INDUSTRIES TRAINING LIMITED | 01741451 | 01/05/1995 | 09/06/1999 | Dissolved |
| WATER PLUS SELECT LIMITED | 03511659 | 17/02/1998 | 30/10/2000 | Amber |
| WATERAID | 01787329 | 16/10/1996 | 05/10/2007 | Silver |
| WATERAID TRADING LIMITED | 02362892 | 12/03/1997 | 05/10/2006 | One Red Flag |