| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Monument Petroleum (U K) Ltd | 01530562 | 13/06/1991 | Dissolved |
| Nimex Energy Ltd | 04890706 | 08/09/2003 | Dissolved |
| Nimex Petroleum Ltd | 02282848 | 29/05/1991 | Dissolved |
| Nimex Services Ltd | 02451786 | 29/05/1991 | Dissolved |
| RHUM MANAGEMENT COMPANY LIMITED | 11626643 | 02/11/2018 | Bronze |
| Secab (Uk) Ltd | 02209328 | 01/11/1991 | Dissolved |
| Trinity Resources Ltd | 06524556 | 05/03/2008 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| 85 WINCHESTER STREET MANAGEMENT COMPANY LIMITED | 05676803 | 05/01/2008 | 13/02/2011 | Not Trading |
| APACHE UK LIMITED | 02586435 | 13/06/1992 | 16/05/1995 | Dissolved |
| E N I Liverpool Bay Ltd | 02566262 | 01/07/1993 | 30/06/1999 | Dissolved |
| EDGO ENERGY LIMITED | 06625871 | 20/06/2008 | 19/06/2009 | Dissolved |
| ENI MEP LIMITED | 00231611 | 13/06/1991 | 30/06/1999 | Dissolved |
| ENI MOG LIMITED | 03211318 | 17/06/1996 | 30/06/1999 | Dissolved |
| ENI RESOURCES LIMITED | 02161862 | 13/06/1991 | 30/06/1999 | Dissolved |
| Eni Energy Ltd | 00176270 | 13/06/1991 | 30/06/1999 | Dissolved |
| Eni Mhh Ltd | 01820901 | 13/06/1991 | 30/06/1999 | Dissolved |
| MATRA PETROLEUM LIMITED | 05375141 | 02/06/2010 | 25/09/2015 | Dissolved |
| WALDORF PRODUCTION UK PLC | 05030838 | 19/07/2004 | 02/10/2005 | One Red Flag |