| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| BAROID CORPORATION | 01640428 | 01/07/2009 | Dissolved |
| BAROID CORPORATION | 01640428 | 01/07/2009 | Dissolved |
| BOOTS AND COOTS UNITED KINGDOM LIMITED | 06936733 | 17/09/2010 | Dissolved |
| GROVE - TK | 01129999 | 01/07/2009 | Strike Off |
| GROVE - TK | 01129999 | 01/07/2009 | Strike Off |
| Gearhart (United Kingdom) | SC074679 | 01/07/2009 | Dissolved |
| Gearhart (United Kingdom) | SC074679 | 01/07/2009 | Dissolved |
| HALLIBURTON ENERGY SERVICES LIMITED | SC231879 | 01/07/2009 | Dissolved |
| HALLIBURTON ENERGY SERVICES LIMITED | SC231879 | 31/03/2010 | Dissolved |
| HALLIBURTON HOLDINGS (NO. 3) | SC231927 | 01/07/2009 | Dissolved |
| HALLIBURTON HOLDINGS (NO. 3) | SC231927 | 01/07/2009 | Dissolved |
| HALLIBURTON HOLDINGS (NO.4) LIMITED | SC342425 | 01/07/2009 | Dissolved |
| HALLIBURTON HOLDINGS (NO.4) LIMITED | SC342425 | 01/07/2009 | Dissolved |
| OSCR 60695 LIMITED | 03002262 | 01/07/2009 | Dissolved |
| OSCR 60695 LIMITED | 03002262 | 01/07/2009 | Dissolved |
| PETROLEUM ENGINEERING SERVICES LIMITED | SC050835 | 01/07/2009 | Dissolved |
| PETROLEUM ENGINEERING SERVICES LIMITED | SC050835 | 01/07/2009 | Dissolved |
| PSL ENERGY SERVICES HOLDINGS LIMITED | SC285264 | 01/07/2009 | Dissolved |
| PSL ENERGY SERVICES HOLDINGS LIMITED | SC285264 | 01/07/2009 | Dissolved |
| PSL ENERGY SERVICES LIMITED | SC243706 | 01/07/2009 | Silver |
| PSL ENERGY SERVICES LIMITED | SC243706 | 01/07/2009 | Silver |
| ROCKWATER HOLDINGS LIMITED | 01535559 | 01/07/2009 | Dissolved |
| ROCKWATER HOLDINGS LIMITED | 01535559 | 01/07/2009 | Dissolved |
| ROCKWATER LIMITED | 01268625 | 01/07/2009 | Dissolved |
| ROCKWATER LIMITED | 01268625 | 01/07/2009 | Dissolved |
| SUB SEA OFFSHORE (HOLDINGS) LIMITED | 01724943 | 01/07/2009 | Dissolved |
| SUB SEA OFFSHORE (HOLDINGS) LIMITED | 01724943 | 01/07/2009 | Dissolved |
| TECHSOURCE RECRUITMENT LIMITED | SC276721 | 01/07/2009 | Dissolved |
| TECHSOURCE RECRUITMENT LIMITED | SC276721 | 01/07/2009 | Dissolved |
| TESEL HOLDINGS | 01383195 | 01/07/2009 | Dissolved |
| TESEL HOLDINGS | 01383195 | 01/07/2009 | Dissolved |
| WLTD LIMITED | 00196631 | 01/07/2009 | Dissolved |
| WLTD LIMITED | 00196631 | 01/07/2009 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BUE SHIPS LIMITED | 01525618 | 01/07/2009 | 25/10/2024 | Gold |
| BUE SHIPS LIMITED | 01525618 | 01/07/2009 | 25/10/2024 | Gold |
| HALLIBURTON LANDMARK HOLDINGS UK LIMITED | 11436807 | 27/06/2018 | 25/10/2024 | Gold |
| HALLIBURTON MANAGEMENT LIMITED | SC232078 | 01/07/2009 | 25/10/2024 | Bronze |
| HALLIBURTON MANAGEMENT LIMITED | SC232078 | 31/03/2010 | 25/10/2024 | Bronze |
| HALLIBURTON MANUFACTURING AND SERVICES LIMITED | 00611451 | 01/07/2009 | 25/10/2024 | Silver |
| HALLIBURTON MANUFACTURING AND SERVICES LIMITED | 00611451 | 31/03/2010 | 25/10/2024 | Silver |
| HML TRUSTEES LIMITED | SC244164 | 01/07/2009 | 25/10/2024 | Not Trading |
| LANDMARK EAME, LTD. | 01937155 | 31/03/2010 | 25/10/2024 | Silver |
| MEDITERRANEAN ENERGY SERVICES LIMITED | SC232077 | 01/07/2009 | 25/10/2024 | Silver |
| MEDITERRANEAN ENERGY SERVICES LIMITED | SC232077 | 01/07/2009 | 25/10/2024 | Silver |
| NEFTEX PETROLEUM CONSULTANTS LIMITED | 04220557 | 12/06/2014 | 25/10/2024 | Gold |
| SUB SEA OFFSHORE LIMITED | 01385206 | 01/07/2009 | 24/10/2024 | Gold |
| SUB SEA OFFSHORE LIMITED | 01385206 | 01/07/2009 | 25/10/2024 | Gold |
| WELLDYNAMICS INTERNATIONAL LIMITED | SC145181 | 01/07/2009 | 25/10/2024 | Silver |