| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Cash Collect Ltd | SC328157 | 02/03/2010 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AQUAMARINE POWER LIMITED | SC327622 | 15/12/2008 | 24/11/2009 | Dissolved |
| FIBRE FUEL LIMITED | 02902165 | 02/03/2010 | 29/03/2013 | Not Trading |
| FIBRE POWER (SLOUGH) LIMITED | 02902170 | 02/03/2010 | 29/03/2013 | Bronze |
| KEADBY CONSTRUCTION LIMITED | 02722985 | 02/03/2010 | 13/03/2013 | Dissolved |
| KEADBY DEVELOPMENTS LIMITED | 02691516 | 02/03/2010 | 13/03/2013 | Not Trading |
| KEADBY GENERATION LIMITED | 02729513 | 02/03/2010 | 13/03/2013 | Silver |
| KEADBY POWER LIMITED | 02548042 | 02/03/2010 | 13/03/2013 | Dissolved |
| MARCHWOOD POWER LIMITED | 04229146 | 19/08/2010 | 23/02/2017 | Silver |
| POWER FROM WASTE LIMITED | 02902302 | 02/03/2010 | 13/03/2013 | Not Trading |
| SIMEC USKMOUTH POWER LIMITED | 05104786 | 02/03/2010 | 13/03/2013 | Silver |
| SLOUGH DOMESTIC ELECTRICITY LIMITED | 03486588 | 02/03/2010 | 13/03/2013 | Not Trading |
| SLOUGH ELECTRICITY CONTRACTS LIMITED | 02902219 | 02/03/2010 | 29/03/2013 | Silver |
| SLOUGH ENERGY SUPPLIES LIMITED | 02474514 | 02/03/2010 | 13/03/2013 | Not Trading |
| SLOUGH HEAT & POWER LIMITED | 00174142 | 02/03/2010 | 29/03/2013 | Bronze |
| SLOUGH UTILITY SERVICES LIMITED | 03486590 | 02/03/2010 | 13/03/2013 | One Red Flag |
| SSE ASIA LIMITED | 06735340 | 14/07/2010 | 23/02/2017 | Dissolved |
| SSE CCS LIMITED | SC427008 | 26/06/2012 | 13/03/2013 | Dissolved |
| SSE GENERATION LIMITED | 02310571 | 12/03/2010 | 29/03/2013 | Amber |
| SSE GREEN DEAL LIMITED | SC432919 | 28/09/2012 | 29/11/2013 | Dissolved |
| SSE LEASING LIMITED | SC165387 | 02/03/2010 | 07/03/2013 | Dissolved |
| SSE POWER LIMITED | 02372114 | 02/03/2010 | 13/03/2013 | Dissolved |
| SSE SEABANK LAND INVESTMENTS LIMITED | 07877772 | 09/12/2011 | 13/03/2013 | Not Trading |
| SSE TODDLEBURN LIMITED | SC259104 | 02/03/2010 | 11/01/2013 | Silver |
| SSE USKMOUTH ACQUISITION COMPANY LIMITED | 06917629 | 02/03/2010 | 13/03/2013 | Dissolved |
| SSE VENTURE CAPITAL LIMITED | SC309396 | 29/05/2009 | 23/02/2017 | Gold |
| SSEPG (OPERATIONS) LIMITED | 02764438 | 18/03/2011 | 13/03/2013 | Bronze |
| THAMES WATER COMMERCIAL VENTURES FINANCE LIMITED | 08766303 | 01/04/2017 | 27/09/2021 | One Red Flag |
| THAMES WATER COMMERCIAL VENTURES HOLDINGS LIMITED | 08765700 | 01/04/2017 | 27/09/2021 | Amber |
| THAMES WATER UTILITIES LIMITED | 02366661 | 13/03/2017 | 27/09/2021 | Amber |