| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| A V A (U K) Ltd | 01918660 | 18/06/2002 | Dissolved |
| BOLETTE DOLPHIN PTE. LTD. | FC031740 | 12/02/2014 | Dissolved |
| D B Stratabit Ltd | SC101981 | 03/09/2002 | Dissolved |
| P E S Petroquip Ltd | SC095241 | 10/09/2002 | Dissolved |
| P E S Petroseal Ltd | SC104611 | 10/09/2002 | Dissolved |
| P E S Petroserv Ltd | SC094116 | 10/09/2002 | Dissolved |
| P E S Petrospec Ltd | SC094789 | 10/09/2002 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BAKER HUGHES ENERGY TECHNOLOGY UK LIMITED | 01521132 | 16/07/2008 | 31/08/2009 | One Red Flag |
| BAKER HUGHES INTERNATIONAL TREASURY SERVICES LIMITED | 03113851 | 16/07/2008 | 31/08/2009 | Bronze |
| BAROID LIMITED | 00843209 | 06/09/2002 | 31/07/2003 | Dissolved |
| CSM ASSOCIATES LIMITED | 02111309 | 16/07/2008 | 31/08/2009 | Dissolved |
| DOLPHIN DRILLING LIMITED | 01017560 | 01/09/2011 | 05/10/2016 | Amber |
| DOLPHIN DRILLING OPERATIONS LIMITED | 07640822 | 24/11/2011 | 05/10/2016 | Dissolved |
| HALLIBURTON LIMITED | 00978424 | 18/06/2002 | 31/07/2003 | Gold |
| JAGUAR OIL & GAS UK LIMITED | 02605078 | 16/07/2008 | 31/08/2009 | Gold |
| KOOMEY COMPANIES INTERNATIONAL LIMITED | 01977008 | 16/07/2008 | 31/08/2009 | Dissolved |
| MONO GROUP | SC107956 | 31/05/2002 | 18/08/2003 | Dissolved |
| ROCKWATER LIMITED | 01268625 | 10/09/2002 | 26/04/2004 | Dissolved |
| VETCO GRAY EASTERN LIMITED | SC303389 | 16/07/2008 | 31/08/2009 | Dissolved |
| VETCO GRAY HOLDING | 05983370 | 25/07/2008 | 31/08/2009 | One Red Flag |
| VETCO GROUP | 04825399 | 25/07/2008 | 31/08/2009 | Dissolved |
| VETCO HOLDINGS (NOK) LIMITED | 06331325 | 25/07/2008 | 31/08/2009 | N/A |
| VETCO HOLDINGS (USD) LIMITED | 06339964 | 25/07/2008 | 31/08/2009 | Silver |
| VETCO INTERNATIONAL HOLDING 4 | 04826486 | 25/07/2008 | 31/08/2009 | One Red Flag |
| VETCO INTERNATIONAL LIMITED | 04825478 | 25/07/2008 | 31/08/2009 | Dissolved |