| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| SOUTH STAFFORDSHIRE PLC | 04295398 | 30/10/2020 | One Red Flag |
| SOUTH STAFFORDSHIRE WATER PLC | 02662742 | 30/04/2015 | Bronze |
| SSW FINANCE LIMITED | 13703008 | 26/11/2021 | Bronze |
| SSW HOLDINGS LIMITED | 13682466 | 26/11/2021 | Amber |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BRISTOL WESSEX BILLING SERVICES LIMITED | 04143955 | 24/01/2001 | 15/02/2010 | Bronze |
| GENECO LIMITED | 06842738 | 10/03/2009 | 15/03/2010 | One Red Flag |
| NORTON RADSTOCK REGENERATION COMPANY | 03690277 | 12/03/2001 | 10/11/2014 | Bronze |
| TURNBULL INFRASTRUCTURE & UTILITIES LIMITED | 03652435 | 18/12/2001 | 15/03/2010 | Silver |
| WATER UK | 03539600 | 31/03/2005 | 31/03/2010 | Bronze |
| WESSEX ELECTRICITY UTILITIES LIMITED | 06718971 | 07/11/2008 | 15/03/2010 | Dissolved |
| WESSEX PROPERTY SERVICES LIMITED | 02277590 | 01/03/2000 | 15/03/2010 | Dissolved |
| WESSEX UTILITY SOLUTIONS LIMITED | 06718997 | 07/11/2008 | 15/03/2010 | Silver |
| WESSEX WATER COMMERCIAL LIMITED | 02372795 | 01/03/2000 | 15/03/2010 | Dissolved |
| WESSEX WATER ENTERPRISES LIMITED | 02279151 | 01/03/2000 | 15/03/2010 | Bronze |
| WESSEX WATER LIMITED | 02366633 | 01/02/2000 | 15/03/2010 | Amber |
| WESSEX WATER PENSION SCHEME TRUSTEE LIMITED | 03913589 | 25/10/2001 | 15/03/2010 | Not Trading |
| WESSEX WATER SERVICES FINANCE PLC | 03704265 | 01/03/2000 | 15/03/2010 | Silver |
| WESSEX WATER SERVICES LIMITED | 02366648 | 20/04/1999 | 15/03/2010 | Silver |
| WESSEX WATER TRUSTEE COMPANY LIMITED | 02278257 | 01/03/2000 | 15/03/2010 | Not Trading |
| YTL UTILITIES HOLDINGS LIMITED | FC026872 | 30/06/2006 | 15/03/2010 | Dissolved |