| Name | Company Number | Date Appointed | Rating |
|---|
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ACTEON GROUP LIMITED | 04231212 | 09/11/2006 | 06/11/2012 | Amber |
| CALEDONIA EUROPE RESOURCES | 03568322 | 23/10/2003 | 09/11/2005 | Dissolved |
| CALEDONIA OFFSHORE DEVELOPMENT LIMITED | 02042719 | 23/10/2003 | 09/11/2005 | Dissolved |
| Caledonia Europe Hydrocarbons | 03568440 | 23/10/2003 | 09/11/2005 | Dissolved |
| E.ON RUHRGAS UK CAISTER LIMITED | 03883559 | 23/10/2003 | 09/11/2005 | Dissolved |
| E.ON RUHRGAS UK NORTH SEA LIMITED | SC240197 | 03/04/2003 | 09/11/2005 | Dissolved |
| E.On Ruhrgas Uk Holding Ltd | 03722631 | 23/10/2003 | 09/11/2005 | Dissolved |
| E.On Ruhrgas Uk Median Ltd | 03974196 | 23/10/2003 | 09/11/2005 | Dissolved |
| FIRST OIL SNS LIMITED | 00986309 | 23/10/2003 | 19/10/2004 | Dissolved |
| FIRST RESERVE INTERNATIONAL LIMITED | 05036590 | 06/02/2004 | 01/10/2012 | Dissolved |
| INEOS UK E&P HOLDINGS LIMITED | SC200459 | 27/04/2000 | 05/02/2002 | Bronze |
| INEOS UK SNS LIMITED | 01021338 | 25/07/2000 | 05/02/2002 | Silver |
| PREMIER OIL E&P UK ENERGY TRADING LIMITED | 04103928 | 23/10/2003 | 09/11/2005 | Dissolved |
| PREMIER OIL E&P UK EU LIMITED | 02907493 | 23/10/2003 | 09/11/2005 | Silver |
| RWE DEA UK DEVELOPMENT LIMITED | 03976025 | 31/10/2000 | 05/02/2002 | Dissolved |
| RWE DEA UK EXPLORATION LIMITED | 03309304 | 25/07/2000 | 05/02/2002 | Dissolved |
| RWE DEA UK LIMITED | SC191561 | 11/05/2000 | 05/02/2002 | Dissolved |