| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Croft Oil & Gas Myanmar Ltd | SC127250 | 08/10/1997 | Dissolved |
| Croft Oil Kazakhstan Ltd | SC154017 | 08/10/1997 | Dissolved |
| DWA ENERGY LIMITED | 07100040 | 09/12/2009 | Gold |
| Entrain Ltd | 04509528 | 13/08/2002 | Dissolved |
| Entrain Ltd | 04509528 | 13/08/2002 | Dissolved |
| Lomond Petroleum Ltd | SC092132 | 08/10/1997 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CROFT EXPLORATION LIMITED | SC092120 | 14/07/1997 | 27/08/1998 | Dissolved |
| CROFT OIL AND GAS PLC | SC117890 | 14/07/1997 | 27/08/1998 | Dissolved |
| DNO NORTH SEA (ROGB) LIMITED | 01852301 | 01/06/1993 | 20/08/1998 | Bronze |
| ONSHORE PRODUCTION SERVICES LIMITED | 04252529 | 16/07/2001 | 24/12/2001 | One Red Flag |
| ROC OIL (EUROPE) LIMITED | 02789239 | 20/05/1993 | 20/08/1998 | Dissolved |
| Roc Oil (Bel) Ltd | 01174987 | 12/11/1997 | 27/08/1998 | Dissolved |
| Roc Oil (E M O G) Ltd | 02245030 | 12/11/1997 | 27/08/1998 | Dissolved |
| SALTFLEETBY ENERGY LIMITED | 00953066 | 14/07/1993 | 27/08/1998 | Bronze |
| WINGAS STORAGE ENTERPRISE LIMITED | 00989348 | 14/07/1993 | 20/08/1998 | Dissolved |