| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Carlyle Energy Ltd | SC229847 | 02/04/2002 | Dissolved |
| Falcon Energy Ltd | SC199294 | 20/09/1999 | Dissolved |
| Hampton Energy Ltd | SC178559 | 17/09/1997 | Dissolved |
| Hidden Oil Ltd | SC260444 | 08/01/2004 | Dissolved |
| MOBIL NORTH SEA LLC | SF000234 | 18/03/1996 | Dissolved |
| WESTOIL LIMITED | SC202136 | 17/01/2000 | Insolvent |
| WESTOIL OPERATIONS LIMITED | 03119331 | 23/03/2000 | Dissolved |
| Zenenergy Developments Ltd | SC219219 | 16/05/2001 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| APACHE BERYL I LIMITED | FC005975 | 18/03/1995 | 22/08/1997 | One Red Flag |
| CANADIAN SUPERIOR OIL (U.K.) LIMITED | 00811825 | 11/03/1996 | 22/08/1997 | N/A |
| COMMON DATA ACCESS LIMITED | 03031728 | 29/03/1995 | 24/01/1996 | Dissolved |
| COSERV BUSINESS MANAGEMENT LIMITED | SC223316 | 18/09/2001 | 23/06/2005 | Gold |
| EXXONMOBIL GAS MARKETING EUROPE LIMITED | 02517230 | 19/08/1996 | 22/08/1997 | Gold |
| PERENCO GAS (UK) LIMITED | 00715529 | 11/03/1996 | 22/08/1997 | Silver |
| Sigma Natural Resources Ltd | SC252163 | 16/12/2003 | 21/01/2004 | Dissolved |
| Ultra Energy Ltd. | SC227400 | 28/01/2002 | 31/12/2003 | Dissolved |