| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Cito Engineering Services Ltd | 01292420 | 04/10/1991 | Dissolved |
| Energy and Power Services Limited | 02381419 | 09/05/1991 | Dissolved |
| Energy and Power Services Limited | 02381419 | 09/05/1991 | Dissolved |
| GEB POWER LIMITED | 06752453 | 24/11/2009 | Not Trading |
| LANGAGE SOLAR PARK LIMITED | 07457338 | 01/12/2010 | Silver |
| TRAFFORD ENERGY LIMITED | 07061583 | 15/01/2010 | Amber |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CARRINGTON POWER LIMITED | 04706728 | 01/04/2003 | 12/05/2010 | Silver |
| CROYDON ENERGY LIMITED | 03298376 | 31/01/1997 | 08/05/1997 | Dissolved |
| EP LANGAGE LIMITED | 03462783 | 10/11/1997 | 17/11/1997 | Gold |
| EP LANGAGE LIMITED | 03462783 | 10/11/1997 | 30/09/2002 | Gold |
| EXETER POWER LIMITED | 03291800 | 31/01/1997 | 25/04/1997 | Dissolved |
| LANGAGE ENERGY PARK LIMITED | 03886291 | 30/11/1999 | 30/09/2002 | Bronze |
| LEVEN INVESTMENTS LIMITED | 02748935 | 01/10/1997 | 23/02/2001 | Bronze |
| The A L Dharis Group Ltd | 02390807 | 31/05/1991 | 01/06/1991 | Dissolved |