| Name | Company Number | Date Appointed | Rating |
|---|
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BARROW OFFSHORE WIND LIMITED | 04145993 | 23/01/2001 | 01/01/2002 | Gold |
| BARROW OFFSHORE WIND LIMITED | 04145993 | 01/01/2002 | 24/06/2003 | Gold |
| CAYTHORPE GAS STORAGE LIMITED | 05283117 | 04/01/2006 | 08/09/2008 | Amber |
| Falmouth Energy Ltd | 03609889 | 05/02/1999 | 30/11/1999 | Dissolved |
| HAVEN ENERGY LIMITED | 03601911 | 31/12/1998 | 31/05/2001 | Dissolved |
| HEYSHAM OFFSHORE WIND LIMITED | 04418903 | 17/04/2002 | 01/06/2005 | Dissolved |
| INDEPENDENT ENERGY (PYE BRIDGE) LIMITED | 03362453 | 04/08/1999 | 25/07/2001 | Dissolved |
| INDEPENDENT ENERGY GENERATION LIMITED | 03276984 | 11/08/1999 | 25/07/2001 | Insolvent |
| INDEPENDENT ENERGY HOLDINGS PLC | 03170807 | 16/04/1996 | 25/07/2001 | Insolvent |
| INDEPENDENT ENERGY RESOURCES LIMITED | 03418196 | 11/08/1999 | 10/03/2015 | Insolvent |
| INDEPENDENT ENERGY UK LIMITED | 03033406 | 08/06/1999 | 25/07/2001 | Dissolved |
| NORTH SEA GAS LIMITED | 02651748 | 24/10/2002 | 12/01/2022 | Dissolved |
| PERENCO ENERGIES INTERNATIONAL LIMITED | SC061143 | 10/02/1989 | 31/05/1996 | Bronze |
| Perenco Gas Ltd | SC060871 | 10/02/1989 | 31/05/1996 | Dissolved |
| THANET OFFSHORE WIND LIMITED | 04512200 | 15/08/2002 | 07/09/2007 | Silver |
| THIRD ENERGY UK GAS LIMITED | 01421481 | 22/01/1992 | 31/05/1996 | One Red Flag |
| WARWICK ENERGY EXPLORATION AND PRODUCTION LIMITED | 04148730 | 26/01/2001 | 01/01/2002 | Silver |
| WARWICK ENERGY EXPLORATION LIMITED | 04148181 | 26/01/2001 | 01/01/2002 | Dissolved |
| WARWICK ENERGY LIMITED | 04095285 | 01/11/2000 | 10/01/2002 | Silver |
| WARWICK ONSHORE EXPLORATION LIMITED | 04148196 | 26/01/2001 | 01/01/2002 | Dissolved |