| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Harvey Oil & Gas Ltd | 03255530 | 28/02/2006 | Dissolved |
| Harvey Oil & Gas Ltd | 03255530 | 26/09/1996 | Dissolved |
| MONSOON RESOURCES LIMITED | 07983510 | 16/06/2014 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BRITANNIA EXPLORATION,INC | FC012031 | 30/11/1994 | 30/09/1996 | Dissolved |
| Blackfriars Oil & Gas Ltd | 00818091 | 29/05/1992 | 30/09/1996 | Dissolved |
| CENTRICA PRODUCTION (DMF) LIMITED | 01483729 | 03/04/1996 | 30/09/1996 | Dissolved |
| ELAND OIL & GAS LIMITED | SC364753 | 03/09/2012 | 17/12/2019 | Gold |
| ENI LNS LIMITED | 00970280 | 08/05/1992 | 30/09/1996 | Not Trading |
| ENI TNS LIMITED | SC055200 | 25/01/1993 | 30/09/1996 | Not Trading |
| ENI TTO LIMITED | 00196665 | 23/02/1993 | 30/09/1996 | Dissolved |
| ENI ULT LIMITED | 00301317 | 23/02/1993 | 30/09/1996 | Silver |
| ENI ULX LIMITED | 00936223 | 29/05/1992 | 30/09/1996 | Silver |
| Eni Tns Holdings Ltd | 00518762 | 03/03/1993 | 30/09/1996 | Dissolved |
| FORUM ENERGY LIMITED | 05411224 | 15/05/2006 | 24/06/2008 | Amber |
| Hautpas Ltd | 01137767 | 27/10/1993 | 30/09/1996 | Dissolved |
| INVICTA NORTH SEA LIMITED | 05268441 | 25/10/2004 | 13/03/2006 | Dissolved |
| Intrepid Energy Developments Ltd | 04045465 | 28/07/2000 | 30/06/2005 | Dissolved |
| Intrepid Energy North Sea (Holdings) Ltd | 04623026 | 20/12/2002 | 30/06/2005 | Dissolved |
| Invincible Exploration Ltd | 04801894 | 20/07/2004 | 25/10/2004 | Dissolved |
| L A S M O (Corby) Ltd | 01125087 | 29/05/1992 | 30/09/1996 | Dissolved |
| LASMO (TSA) LIMITED | SC034216 | 27/10/1993 | 30/09/1996 | Dissolved |
| LASMO PETROLEUM (MINERALS) LIMITED | 01073330 | 27/10/1993 | 30/09/1996 | Dissolved |
| LASMO VIETNAM LIMITED | 02510072 | 21/07/1994 | 30/09/1996 | Dissolved |
| Lasmo (Tsp) Ltd | SC049025 | 27/10/1993 | 30/09/1996 | Dissolved |
| Lasmo (U D G ) Plc | 01234982 | 29/05/1992 | 30/09/1996 | Dissolved |
| Lasmo (W P) Inc | FC005626 | 30/11/1994 | 30/09/1996 | Dissolved |
| Lasmo Claymore Petroleum Ltd | SC056731 | 27/10/1993 | 30/09/1996 | Dissolved |
| Neptune (T T 0) | 01499050 | 27/10/1993 | 30/09/1996 | Dissolved |
| PETRO-CANADA ENERGY NORTH SEA LIMITED | 03084447 | 21/02/1997 | 18/06/2004 | Gold |
| PRAX UPSTREAM LIMITED | 05245689 | 12/09/2005 | 12/09/2005 | Bronze |
| REPSOL ALPHA LIMITED | 04796268 | 12/06/2003 | 22/12/2003 | Silver |
| REPSOL BETA LIMITED | 04796282 | 12/06/2003 | 13/12/2004 | One Red Flag |
| ROCKROSE UKCS4 LIMITED | 02552901 | 30/07/1998 | 20/05/2004 | Silver |
| TALISMAN ENERGY DL LIMITED | 04079629 | 05/02/2001 | 29/04/2004 | Insolvent |
| TALISMAN ENERGY NS LIMITED | 04079631 | 05/02/2001 | 29/04/2004 | Insolvent |
| TALISMAN ENERGY OIL TRANSPORTATION LIMITED | 03135059 | 30/07/1998 | 29/04/2004 | Dissolved |