| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| CYNEFIN ENVIRONMENTAL CONSULTANTS LIMITED | 02743222 | 27/08/1992 | Dissolved |
| DDRAIG MINERAL DEVELOPMENTS LIMITED | 03109193 | 02/10/1995 | Dissolved |
| Gyros Technology Ltd | 02350130 | 21/02/1991 | Dissolved |
| Gyros Technology Ltd | 02350130 | 21/02/1991 | Dissolved |
| Lottery Products Ltd | 03597347 | 22/07/1998 | Dissolved |
| Lottery Products Ltd | 03597347 | 22/07/1998 | Dissolved |
| MENAI NURSERY LIMITED | 03128951 | 24/03/1998 | Dissolved |
| Monview Ltd | 02137295 | 07/12/1990 | Dissolved |
| Monview Ltd | 02137295 | 07/12/1990 | Dissolved |
| P & B (Microtech) Ltd | 03284114 | 04/12/1996 | Dissolved |
| P & B (Microtech) Ltd | 03284114 | 04/12/1996 | Dissolved |
| P & B (Sciences) Ltd | 02455954 | 28/12/1991 | Dissolved |
| P & B (Sciences) Ltd | 02455954 | 28/12/1991 | Dissolved |
| Predicate Logic Limited | 01577646 | 31/12/1991 | Dissolved |
| ROBERTSON RESEARCH ASSOCIATES LIMITED | 02669064 | 06/12/1991 | Dissolved |
| ROBERTSON RESEARCH ASSOCIATES LIMITED | 02669064 | 06/12/1991 | Dissolved |
| THE SLATE ECOLOGY COMPANY LIMITED | 03218483 | 28/06/1996 | Dissolved |
| Whitfield Place Ltd. | 02748541 | 18/09/1992 | Dissolved |
| Whitfield Place Ltd. | 02748541 | 18/09/1992 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BLACKWATCH MANAGEMENT LIMITED | SC166156 | 03/07/2000 | 11/09/2009 | Dissolved |
| BLACKWATCH PETROLEUM SERVICES LIMITED | SC150618 | 09/05/1994 | 11/09/2009 | Strike Off |
| BLACKWATCH PETROLEUM SERVICES LIMITED | SC150618 | 27/06/1994 | 25/05/2000 | Strike Off |
| BOB PARRY AND COMPANY LIMITED | 00223068 | 17/06/2011 | 02/08/2014 | Silver |
| Billet Distributors Ltd | 02774819 | 18/12/1992 | 19/08/2002 | Dissolved |
| Billet Distributors Ltd | 02774819 | 18/12/1992 | 27/08/2002 | Dissolved |
| CALEDONIA OFFSHORE DEVELOPMENT LIMITED | 02042719 | 23/10/2003 | 09/11/2005 | Dissolved |
| CATALINA RESOURCES PLC | 05837907 | 19/07/2006 | 15/12/2017 | One Red Flag |
| CYNEFIN ENVIRONMENTAL CONSULTANTS LIMITED | 02743222 | 27/08/1992 | 05/05/2004 | Dissolved |
| E.ON RUHRGAS UK NORTH SEA LIMITED | SC240197 | 21/03/2003 | 09/11/2004 | Dissolved |
| INEOS UK E&P HOLDINGS LIMITED | SC200459 | 11/05/2000 | 12/11/2003 | Bronze |
| INEOS UK SNS LIMITED | 01021338 | 25/07/2000 | 12/11/2003 | Silver |
| MAELGWYN MINERAL SERVICES LIMITED | 03453319 | 11/12/1998 | 08/10/2018 | Amber |
| National Gold Ltd | 03012763 | 23/01/1995 | 11/04/1995 | Dissolved |
| National Gold Ltd | 03012763 | 23/01/1995 | 30/07/1996 | Dissolved |
| Nomar Ltd | SC180647 | 09/02/1999 | 22/10/2001 | Dissolved |
| Odyssey Oil Ltd | 03220990 | 01/10/1996 | 27/03/1997 | Dissolved |
| RWE DEA UK DEVELOPMENT LIMITED | 03976025 | 31/10/2000 | 12/11/2003 | Dissolved |
| RWE DEA UK EXPLORATION LIMITED | 03309304 | 25/07/2000 | 12/11/2003 | Dissolved |
| RWE DEA UK LIMITED | SC191561 | 22/12/1998 | 12/11/2003 | Dissolved |
| SOUTH TEXAS OIL AND GAS LIMITED | 02891097 | 25/01/1994 | 11/12/2002 | Dissolved |
| SOUTH TEXAS OIL AND GAS LIMITED | 02891097 | 25/01/1994 | 11/12/2002 | Dissolved |
| THE SLATE ECOLOGY COMPANY LIMITED | 03218483 | 28/06/1996 | 25/03/2004 | Dissolved |