| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Enterprise Oil (Adang) Ltd | 01752241 | 31/05/1991 | Dissolved |
| Enterprise Oil (Bengkulu) Ltd | 01682050 | 31/05/1991 | Dissolved |
| Enterprise Oil (Muara Kampar) Ltd | 01829721 | 31/05/1991 | Dissolved |
| Enterprise Oil (Tomori) Ltd | 01829724 | 31/05/1991 | Dissolved |
| Enterprise Oil Buton Limited | 02381058 | 31/05/1991 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ANTECH LIMITED | 02962739 | 17/07/2008 | 29/04/2014 | Silver |
| EDPLACE LIMITED | 07448614 | 23/11/2010 | 23/01/2013 | One Red Flag |
| ENTEQ TECHNOLOGIES PLC | 07590845 | 26/05/2011 | 29/09/2023 | Amber |
| ENTERPRISE OIL LIMITED | 01682048 | 31/05/1992 | 02/09/1998 | Gold |
| ENTERPRISE OIL MIDDLE EAST LIMITED | 02650009 | 19/06/1996 | 01/09/1998 | Gold |
| ENTERPRISE OIL NORGE LIMITED | 01682049 | 31/07/1992 | 01/09/1998 | Not Trading |
| Enterprise Oil (Bawean) Ltd | FC015810 | 23/08/1993 | 01/09/1998 | Dissolved |
| Enterprise Oil Argentina Ltd | 02380998 | 31/05/1991 | 01/09/1998 | Dissolved |
| Enterprise Oil Indonesia Ltd | 01752244 | 31/05/1991 | 01/09/1998 | Dissolved |
| Enterprise Oil Italy Ltd | 02552899 | 31/07/1992 | 01/09/1998 | Dissolved |
| Enterprise Oil Overseas Holdings Ltd | 02650011 | 24/03/1995 | 01/09/1998 | Dissolved |
| Enterprise Oil Timor Gap (14) Ltd | 02552895 | 31/05/1992 | 01/09/1998 | Dissolved |
| Enterprise Oil Timor Gap (9) Ltd | 02552897 | 31/05/1992 | 01/09/1998 | Dissolved |
| Enterprise Petroleum Ltd | 00753093 | 25/03/1996 | 01/09/1998 | Dissolved |
| G4S HOLDINGS INTERNATIONAL (AG) LIMITED | 04931893 | 21/01/2005 | 07/05/2008 | Bronze |
| HANROSE VENTURES LIMITED | 07207032 | 29/03/2010 | 22/06/2023 | Silver |
| HUNTING PLC | 00974568 | 13/06/2000 | 08/06/2010 | Gold |
| HYVE GROUP LIMITED | 01927339 | 28/05/2002 | 23/03/2012 | Silver |
| INEOS E&P (SIRI) UK LIMITED | 02650006 | 23/06/1997 | 01/09/1998 | N/A |
| OCTAGON (CBM) LIMITED | 02292431 | 15/10/1998 | 31/08/2001 | Dissolved |
| OCTAGON (CBM) RESOURCES LIMITED | 02757863 | 15/10/1998 | 31/08/2001 | Dissolved |
| OCTAGON ENERGY LIMITED | 02020195 | 03/10/1998 | 31/08/2001 | Dissolved |
| PALADIN RESOURCES LIMITED | SC149507 | 02/11/1998 | 21/11/2005 | Gold |
| PLEBBLE LOYALTY LIMITED | 05881918 | 20/07/2006 | 27/05/2011 | Dissolved |
| ROCKROSE UKCS4 LIMITED | 02552901 | 10/07/1996 | 30/07/1998 | Silver |
| SAXON OIL LIMITED | 01477686 | 25/03/1996 | 01/09/1998 | Not Trading |
| SAXON OIL MILLER LIMITED | 03209823 | 17/03/1997 | 01/09/1998 | Not Trading |
| SHELL EP OFFSHORE VENTURES LIMITED | 01682052 | 31/05/1991 | 01/09/1998 | Gold |
| SONDEX GROUP | 04423955 | 19/11/2002 | 04/06/2003 | Dissolved |
| SONDEX LIMITED | 04530983 | 09/05/2003 | 26/10/2007 | Bronze |
| TALISMAN ENERGY OIL TRANSPORTATION LIMITED | 03135059 | 10/07/1996 | 30/07/1998 | Dissolved |