| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| E.ON UK TRUSTEES LIMITED | 05102988 | 01/05/2017 | Not Trading |
| KJAP CONSULTING LTD | 11613047 | 09/10/2018 | Bronze |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BIOGENERATION LIMITED | 02970302 | 10/06/1999 | 09/11/2001 | Dissolved |
| CITIGEN (LONDON) LIMITED | 02427823 | 07/04/2003 | 01/01/2008 | Bronze |
| CORBY POWER LIMITED | 02329494 | 31/03/2004 | 01/01/2008 | Silver |
| CPL OPERATIONS LIMITED | 04159143 | 31/03/2004 | 01/01/2008 | Dissolved |
| DIAMOND POWER GENERATION LIMITED | 04000114 | 31/03/2004 | 24/04/2006 | Dissolved |
| E.ON UK CHP LIMITED | 02684288 | 05/03/2002 | 01/01/2008 | Bronze |
| E.ON UK GREEN FUNDING SOLUTIONS LIMITED | 02730697 | 05/03/2002 | 01/01/2008 | Silver |
| ERGON POWER LIMITED | 03548347 | 31/03/2004 | 24/04/2006 | Dissolved |
| HOLFORD GAS STORAGE LIMITED | SC254265 | 26/07/2005 | 01/01/2008 | Silver |
| LONDON ARRAY LIMITED | 04344423 | 12/01/2007 | 01/01/2008 | One Red Flag |
| POWERGEN IRELAND LIMITED | 04721782 | 31/03/2004 | 01/01/2008 | Dissolved |
| RWE RENEWABLES UK HUMBER WIND LIMITED | 04899318 | 19/12/2006 | 01/01/2008 | Silver |
| RWE RENEWABLES UK LIMITED | 03758404 | 19/12/2006 | 01/01/2008 | Silver |
| RWE RENEWABLES UK LONDON ARRAY LIMITED | 05321254 | 09/08/2007 | 01/01/2008 | Gold |
| RWE RENEWABLES UK ONSHORE WIND LIMITED | 03758407 | 19/12/2006 | 01/01/2008 | Silver |
| RWE RENEWABLES UK OPERATIONS LIMITED | 02692529 | 19/12/2006 | 16/05/2007 | Gold |
| RWE RENEWABLES UK ROBIN RIGG EAST LIMITED | 03568724 | 19/12/2006 | 01/01/2008 | Silver |
| RWE RENEWABLES UK ROBIN RIGG WEST LIMITED | 04150735 | 19/12/2006 | 01/01/2008 | Bronze |
| RWE RENEWABLES UK SCROBY SANDS LIMITED | 04127830 | 19/12/2006 | 01/01/2008 | Bronze |
| RWE RENEWABLES UK WIND SERVICES LIMITED | 05266294 | 19/12/2006 | 01/01/2008 | Silver |
| SCARWEATHER SANDS LIMITED | 04271879 | 11/04/2007 | 01/01/2008 | Dissolved |
| THE ASSOCIATION FOR DECENTRALISED ENERGY | 00917116 | 19/06/1997 | 24/06/1998 | Gold |
| THE ASSOCIATION FOR RENEWABLE ENERGY AND CLEAN TECHNOLOGY | 04241430 | 15/03/2007 | 24/04/2008 | Bronze |
| UNIPER UK COTTAM LIMITED | 03273552 | 31/03/2004 | 15/10/2007 | Not Trading |