| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| CAIRNGORM OIL & GAS LLP | SO302619 | 10/08/2010 | Dissolved |
| CAIRNGORM OIL & GAS MANAGEMENT LLP | SO302621 | 14/12/2009 | Dissolved |
| CAIRNGORM OIL AND GAS INVESTMENT LLP | SO302622 | 14/12/2009 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| 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 |
| HUMBERSIDE OIL AND GAS LIMITED | 07897665 | 18/04/2012 | 07/08/2013 | Dissolved |
| KCA DEUTAG ALPHA II LIMITED | 06511474 | 03/03/2008 | 08/12/2009 | Dissolved |
| KCA DEUTAG ALPHA LIMITED | 06433748 | 11/12/2007 | 08/12/2009 | Silver |
| PREMIER OIL E&P UK EU LIMITED | 02907493 | 23/10/2003 | 09/11/2005 | Silver |
| TURBO BETA PLC | 06433751 | 11/12/2007 | 08/12/2009 | Dissolved |
| TURBO DELTA LIMITED | 06433755 | 11/12/2007 | 08/12/2009 | Dissolved |
| TURBO GAMMA LIMITED | 06433754 | 11/12/2007 | 08/12/2009 | Dissolved |