| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| DRILL BITS AND SERVICES UNITED KINGDOM LTD | 09928787 | 23/12/2015 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BAROID CORPORATION | 01640428 | 01/01/2014 | 08/12/2017 | Dissolved |
| BUE SHIPS LIMITED | 01525618 | 01/01/2014 | 08/12/2017 | Gold |
| HALLIBURTON ENERGY SERVICES LIMITED | SC231879 | 01/01/2014 | 08/12/2017 | Dissolved |
| HALLIBURTON GLOBAL HOLDINGS LIMITED | 08794280 | 01/05/2014 | 08/12/2017 | Gold |
| HALLIBURTON HOLDINGS (NO. 3) | SC231927 | 01/01/2014 | 08/12/2017 | Dissolved |
| HALLIBURTON MANAGEMENT LIMITED | SC232078 | 01/01/2014 | 08/12/2017 | Bronze |
| HALLIBURTON MANUFACTURING AND SERVICES LIMITED | 00611451 | 01/01/2014 | 08/12/2017 | Silver |
| INTELLIGENT WELL CONTROLS LIMITED | SC364115 | 01/01/2014 | 08/12/2017 | Dissolved |
| LANDMARK EAME, LTD. | 01937155 | 01/01/2014 | 08/12/2017 | Silver |
| MEDITERRANEAN ENERGY SERVICES LIMITED | SC232077 | 01/01/2014 | 08/12/2017 | Silver |
| MULTI-CHEM PRODUCTION CHEMICALS (UK) LIMITED | SC308016 | 01/01/2014 | 08/12/2017 | Dissolved |
| NEFTEX PETROLEUM CONSULTANTS LIMITED | 04220557 | 12/06/2014 | 08/12/2017 | Gold |
| OSCR 60695 LIMITED | 03002262 | 01/01/2014 | 08/12/2017 | Dissolved |
| PETRIS TECHNOLOGY, LTD. | 05453198 | 01/01/2014 | 08/12/2017 | Dissolved |
| PETROLEUM ENGINEERING SERVICES LIMITED | SC050835 | 01/01/2014 | 08/12/2017 | Dissolved |
| PETROLEUM MANUFACTURING SERVICES LIMITED | SC111835 | 01/01/2014 | 11/12/2017 | Dissolved |
| PROTECH CENTREFORM INTERNATIONAL LIMITED | SC252217 | 05/06/2008 | 08/12/2017 | Gold |
| PSL ENERGY SERVICES HOLDINGS LIMITED | SC285264 | 01/01/2014 | 08/12/2017 | Dissolved |
| PSL ENERGY SERVICES LIMITED | SC243706 | 01/01/2014 | 08/12/2017 | Silver |
| RED SPIDER TECHNOLOGY LIMITED | SC249841 | 01/01/2014 | 08/12/2017 | Dissolved |
| ROCKWATER HOLDINGS LIMITED | 01535559 | 01/01/2014 | 08/12/2017 | Dissolved |
| SUB SEA OFFSHORE (HOLDINGS) LIMITED | 01724943 | 01/01/2014 | 08/12/2017 | Dissolved |
| SUB SEA OFFSHORE LIMITED | 01385206 | 01/01/2014 | 08/12/2017 | Gold |
| TECHSOURCE RECRUITMENT LIMITED | SC276721 | 01/01/2014 | 08/12/2017 | Dissolved |
| THE UK OFFSHORE ENERGIES ASSOCIATION LIMITED | 01119804 | 27/04/2015 | 06/12/2017 | Silver |
| WELLDYNAMICS INTERNATIONAL LIMITED | SC145181 | 01/01/2014 | 11/12/2017 | Silver |
| WLTD LIMITED | 00196631 | 01/01/2014 | 08/12/2017 | Dissolved |