| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Enterprise Oil (Bawean) Ltd | FC015810 | 01/01/1997 | Dissolved |
| The Institute of Petroleum | 00135273 | 06/06/2001 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BONDCO 921 REALISATIONS PLC | 04329960 | 22/12/2003 | 17/01/2008 | Dissolved |
| ENTERPRISE OIL LIMITED | 01682048 | 01/01/1997 | 31/10/2001 | Gold |
| ENTERPRISE OIL MIDDLE EAST LIMITED | 02650009 | 01/01/1997 | 31/10/2001 | Gold |
| ENTERPRISE OIL NORGE LIMITED | 01682049 | 01/01/1997 | 31/10/2001 | Not Trading |
| ENTERPRISE OIL OPERATIONS LIMITED | 03324639 | 03/09/2001 | 31/10/2001 | Dissolved |
| ENTERPRISE OIL U.K. LIMITED | 02290358 | 31/08/2001 | 31/10/2001 | Bronze |
| Enterprise (E & P) Ltd | 01765251 | 01/01/1997 | 31/10/2001 | Dissolved |
| Enterprise Oil Argentina Ltd | 02380998 | 01/01/1997 | 01/09/1998 | Dissolved |
| Enterprise Oil Indonesia Ltd | 01752244 | 01/01/1997 | 31/10/2001 | Dissolved |
| Enterprise Oil Italy Ltd | 02552899 | 01/01/1997 | 31/10/2001 | Dissolved |
| Enterprise Oil Nominees Ltd | 01741497 | 09/01/1997 | 31/10/2001 | Dissolved |
| Enterprise Oil Overseas Holdings Ltd | 02650011 | 01/01/1997 | 31/10/2001 | Dissolved |
| Enterprise Oil Timor Gap (14) Ltd | 02552895 | 01/01/1997 | 31/10/2001 | Dissolved |
| Enterprise Oil Timor Gap (9) Ltd | 02552897 | 01/01/1997 | 31/10/2001 | Dissolved |
| Enterprise Petroleum Ltd | 00753093 | 01/01/1997 | 31/10/2001 | Dissolved |
| FIRST OIL SNS LIMITED | 00986309 | 31/08/2001 | 31/10/2001 | Dissolved |
| IMPERIAL BRANDS PLC | 03236483 | 01/08/2002 | 01/02/2012 | One Red Flag |
| INEOS E&P (SIRI) UK LIMITED | 02650006 | 23/06/1997 | 13/09/2001 | N/A |
| ROCKHOPPER EXPLORATION PLC | 05250250 | 21/02/2005 | 17/05/2016 | Silver |
| ROCKROSE UKCS4 LIMITED | 02552901 | 01/01/1997 | 30/07/1998 | Silver |
| SAXON OIL LIMITED | 01477686 | 01/01/1997 | 31/10/2001 | Not Trading |
| SAXON OIL MILLER LIMITED | 03209823 | 17/03/1997 | 31/10/2001 | Not Trading |
| SHELL EP OFFSHORE VENTURES LIMITED | 01682052 | 01/01/1997 | 31/10/2001 | Gold |
| TALISMAN ENERGY OIL TRANSPORTATION LIMITED | 03135059 | 01/01/1997 | 30/07/1998 | Dissolved |
| THE INDUSTRY TECHNOLOGY FACILITATOR | SC171891 | 04/04/1997 | 24/08/1999 | Dissolved |
| VELOCYS PLC | 05712187 | 29/03/2006 | 09/12/2019 | Silver |
| VELOCYS TECHNOLOGIES LIMITED | 05258554 | 16/03/2006 | 29/03/2006 | One Red Flag |