| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| E F Ltd | 05498376 | 04/07/2005 | Dissolved |
| Energy Fulcrum Ltd | 05498410 | 04/07/2005 | Dissolved |
| G E W Associates Ltd | SC236865 | 17/09/2002 | Dissolved |
| G E W Associates Ltd | SC236865 | 17/09/2002 | Dissolved |
| G W ASSOCIATES LIMITED | 03316555 | 11/02/1997 | Gold |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ABBOT GROUP LIMITED | 00623285 | 09/12/2002 | 17/03/2008 | Bronze |
| BATAVIA OIL RANG DONG LTD | 03716310 | 10/03/1999 | 03/09/2002 | Bronze |
| CHRYSAOR (U.K.) ALPHA LIMITED | 02374592 | 07/01/1999 | 03/09/2002 | Bronze |
| CHRYSAOR (U.K.) BETA LIMITED | 02316577 | 07/01/1999 | 03/09/2002 | One Red Flag |
| CHRYSAOR (U.K.) ETA LIMITED | 02369861 | 01/08/2000 | 03/09/2002 | Insolvent |
| CHRYSAOR (U.K.) FINANCE LIMITED | 03553888 | 02/06/1998 | 03/09/2002 | Dissolved |
| CHRYSAOR (U.K.) THETA LIMITED | 01491002 | 01/08/2000 | 03/09/2002 | Gold |
| CHRYSAOR (U.K.) ZETA LIMITED | 01775651 | 01/08/2000 | 03/09/2002 | Insolvent |
| CHRYSAOR DEVELOPMENTS LIMITED | 02180666 | 01/10/1993 | 03/09/2002 | One Red Flag |
| CHRYSAOR INVESTMENTS LIMITED | 02673868 | 01/10/1993 | 03/09/2002 | Dissolved |
| CHRYSAOR PETROLEUM LIMITED | 01247477 | 01/10/1993 | 03/09/2002 | Silver |
| CHRYSAOR PRODUCTION (U.K.) LIMITED | 00524868 | 01/10/1993 | 03/09/2002 | Bronze |
| CHRYSAOR PRODUCTION HOLDINGS LIMITED | 03629601 | 29/10/1998 | 03/09/2002 | Bronze |
| Conocophillips (U.K.) Technology Ltd | 03560523 | 02/06/1998 | 03/09/2002 | Dissolved |
| DU PONT TREASURY LTD | 02492589 | 01/10/1993 | 12/03/1999 | Dissolved |
| Dupont U.K. Holdings Ltd | 03482828 | 12/12/1997 | 08/03/1999 | Dissolved |
| GLEN PETROLEUM LIMITED | 01509350 | 15/12/1995 | 03/09/2002 | Dissolved |
| GRAMPIAN AVIATION FUELLING SERVICES LIMITED | 03716230 | 10/03/1999 | 03/09/2002 | Dissolved |
| HARBOUR ENERGY DEVELOPMENTS LIMITED | 03230514 | 30/08/1996 | 03/09/2002 | Not Trading |
| ITI SCOTLAND LIMITED | SC251900 | 01/11/2003 | 03/04/2009 | Amber |
| MAERSK COMPANY LIMITED(THE) | 00493147 | 02/08/2006 | 01/06/2008 | Amber |
| PALADIN RESOURCES LIMITED | SC149507 | 21/02/2003 | 21/11/2005 | Gold |
| PHILLIPS 66 CS LIMITED | 02809975 | 01/03/1999 | 03/09/2002 | Dissolved |
| PHILLIPS 66 LIMITED | 00529086 | 01/10/1993 | 03/09/2002 | Silver |
| Petroleum Science & Technology Institute (The) | SC120900 | 15/11/1994 | 10/04/1997 | Dissolved |
| SCOTTISH ENTERPRISE GRAMPIAN | SC118134 | 27/06/1994 | 31/12/2004 | Not Trading |
| TOTALENERGIES EP COMPANY UK LIMITED | 05471104 | 27/10/2006 | 02/07/2008 | Silver |
| VPI ICHP LIMITED | 04047993 | 24/08/2000 | 06/11/2001 | One Red Flag |
| VPI IMMINGHAM OPERATIONS LIMITED | 03716311 | 10/03/1999 | 01/08/2001 | Silver |
| WGPSN (HOLDINGS) LIMITED | SC288570 | 23/05/2006 | 20/04/2011 | Bronze |
| XTRACT RESOURCES PLC | 05267047 | 01/07/2011 | 10/09/2012 | Gold |