| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| PROMANEX GROUP HOLDINGS LIMITED | 05933523 | 01/09/2020 | Dissolved |
| PROMANEX GROUP LIMITED | 03895753 | 01/09/2020 | Dissolved |
| RG BIDCO LIMITED | 07652992 | 01/09/2020 | Dissolved |
| RHEAD GROUP HOLDINGS LIMITED | 07652990 | 01/09/2020 | Dissolved |
| RHEAD HOLDINGS LIMITED | 07076869 | 01/09/2020 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CLM ENGINEERING (OVERSEAS) LIMITED | 02992285 | 01/09/2020 | 08/07/2024 | Not Trading |
| COGAP (MIDDLE EAST) LIMITED | 06454224 | 30/11/2020 | 08/07/2024 | Amber |
| COSTAIN BUILDING & CIVIL ENGINEERING LIMITED | 01054232 | 01/09/2020 | 08/07/2024 | Gold |
| COSTAIN CIVIL ENGINEERING LIMITED | 02757907 | 01/09/2020 | 08/07/2024 | Amber |
| COSTAIN CONSTRUCTION LIMITED | 00563270 | 01/09/2020 | 08/07/2024 | Not Trading |
| COSTAIN ENERGY SOLUTIONS LIMITED | 08114519 | 30/11/2020 | 08/07/2024 | Not Trading |
| COSTAIN ENGINEERING & CONSTRUCTION (OVERSEAS) LIMITED | 02440830 | 30/11/2020 | 08/07/2024 | Gold |
| COSTAIN ENGINEERING & CONSTRUCTION LIMITED | 02440829 | 01/09/2020 | 08/07/2024 | Gold |
| COSTAIN INTEGRATED TECHNOLOGY SOLUTIONS LIMITED | 01439838 | 01/09/2020 | 08/07/2024 | Gold |
| COSTAIN INTERNATIONAL LIMITED | 00563275 | 30/11/2020 | 08/07/2024 | Amber |
| COSTAIN LIMITED | 00610201 | 01/01/2015 | 08/07/2024 | Silver |
| COSTAIN MANAGEMENT DESIGN LIMITED | 01599349 | 01/09/2020 | 08/07/2024 | Not Trading |
| COSTAIN OIL, GAS & PROCESS (OVERSEAS) LIMITED | 00583789 | 30/11/2020 | 08/07/2024 | Not Trading |
| COSTAIN OIL, GAS & PROCESS LIMITED | 00786418 | 01/09/2020 | 08/07/2024 | One Red Flag |
| COSTAIN PROCESS CONSTRUCTION LIMITED | 00590330 | 01/09/2020 | 08/07/2024 | Not Trading |
| LYSANDER SERVICES LIMITED | 00766914 | 01/09/2020 | 08/07/2024 | Bronze |
| PROMANEX (CIVILS & INDUSTRIAL SERVICES) LIMITED | 02224393 | 01/09/2020 | 08/07/2024 | Not Trading |
| PROMANEX (CONSTRUCTION & MAINTENANCE SERVICES) LIMITED | 03548978 | 01/09/2020 | 08/07/2024 | Not Trading |
| PROMANEX (TOTAL FM & ENVIRONMENTAL SERVICES) LIMITED | 03230494 | 01/09/2020 | 08/07/2024 | Bronze |
| WESTMINSTER PLANT CO. LIMITED | 00552140 | 30/11/2020 | 08/07/2024 | Not Trading |