| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Roc Oil (Bel) Ltd | 01174987 | 01/08/1999 | Dissolved |
| Roc Oil (E M O G) Ltd | 02245030 | 01/08/1999 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CROFT (UK) LIMITED | 03296644 | 01/08/1999 | 27/06/2008 | Dissolved |
| CROFT EXPLORATION LIMITED | SC092120 | 01/08/1999 | 27/06/2008 | Dissolved |
| CROFT OFFSHORE OIL LIMITED | SC152234 | 01/08/1999 | 27/06/2008 | Dissolved |
| CROFT OIL AND GAS PLC | SC117890 | 01/08/1999 | 27/06/2008 | Dissolved |
| DNO NORTH SEA (ROGB) LIMITED | 01852301 | 01/08/1999 | 27/06/2008 | Bronze |
| ROC OIL (EUROPE) LIMITED | 02789239 | 01/08/1999 | 27/06/2008 | Dissolved |
| ROC OIL (FALKLANDS) LIMITED | 03532459 | 05/03/1999 | 27/06/2008 | Dissolved |
| SALTFLEETBY ENERGY LIMITED | 00953066 | 01/08/1999 | 21/01/2005 | Bronze |
| WINGAS STORAGE ENTERPRISE LIMITED | 00989348 | 01/08/1999 | 21/01/2005 | Dissolved |