| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| BAROID CORPORATION | 01640428 | 01/02/2020 | Dissolved |
| DARCY TECHNOLOGIES HOLDINGS LIMITED | SC458727 | 16/12/2019 | Dissolved |
| DARCY TECHNOLOGIES LIMITED | 07148795 | 16/12/2019 | Dissolved |
| INTELLIGENT WELL CONTROLS LIMITED | SC364115 | 16/12/2019 | Dissolved |
| MULTI-CHEM PRODUCTION CHEMICALS (UK) LIMITED | SC308016 | 01/02/2020 | Dissolved |
| PETROLEUM ENGINEERING SERVICES LIMITED | SC050835 | 01/02/2020 | Dissolved |
| RED SPIDER TECHNOLOGY LIMITED | SC249841 | 16/12/2019 | Dissolved |
| ROCKWATER HOLDINGS LIMITED | 01535559 | 01/02/2020 | Dissolved |
| SUB SEA OFFSHORE (HOLDINGS) LIMITED | 01724943 | 01/02/2020 | Dissolved |
| TECHSOURCE RECRUITMENT LIMITED | SC276721 | 28/02/2020 | Dissolved |
| WLTD LIMITED | 00196631 | 01/02/2020 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BUE SHIPS LIMITED | 01525618 | 01/02/2020 | 31/10/2021 | Gold |
| HALLIBURTON ENERGY SERVICES LIMITED | SC231879 | 16/12/2019 | 31/10/2021 | Dissolved |
| HALLIBURTON GLOBAL HOLDINGS LIMITED | 08794280 | 16/12/2019 | 31/10/2021 | Gold |
| HALLIBURTON HOLDINGS (NO. 3) | SC231927 | 01/02/2020 | 31/10/2021 | Dissolved |
| HALLIBURTON LANDMARK HOLDINGS UK LIMITED | 11436807 | 16/12/2019 | 31/10/2021 | Gold |
| HALLIBURTON LIMITED | 00978424 | 16/12/2019 | 31/10/2021 | Gold |
| HALLIBURTON MANAGEMENT LIMITED | SC232078 | 01/02/2020 | 31/10/2021 | Bronze |
| HALLIBURTON MANUFACTURING AND SERVICES LIMITED | 00611451 | 05/11/2019 | 31/10/2021 | Silver |
| LANDMARK EAME, LTD. | 01937155 | 16/12/2019 | 31/10/2021 | Silver |
| MEDITERRANEAN ENERGY SERVICES LIMITED | SC232077 | 16/12/2019 | 31/10/2021 | Silver |
| NEFTEX PETROLEUM CONSULTANTS LIMITED | 04220557 | 16/12/2019 | 31/10/2021 | Gold |
| PETRIS TECHNOLOGY, LTD. | 05453198 | 16/12/2019 | 31/10/2021 | Dissolved |
| PROTECH CENTREFORM INTERNATIONAL LIMITED | SC252217 | 16/12/2019 | 31/10/2021 | Gold |
| PSL ENERGY SERVICES LIMITED | SC243706 | 16/12/2019 | 31/10/2021 | Silver |
| ROCKWATER LIMITED | 01268625 | 01/02/2020 | 31/10/2021 | Dissolved |
| SUB SEA OFFSHORE LIMITED | 01385206 | 01/02/2020 | 31/10/2021 | Gold |
| WELLDYNAMICS INTERNATIONAL LIMITED | SC145181 | 16/01/2019 | 31/10/2021 | Silver |