| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| P J DAVIDSON (UK) LIMITED | 11526666 | 12/09/2023 | Gold |
| VOLKERFITZPATRICK LIMITED | 02387700 | 25/08/2022 | Silver |
| VOLKERFITZPATRICK OVERSEAS LIMITED | 01653247 | 25/08/2022 | Bronze |
| VOLKERHIGHWAYS LIMITED | 00638559 | 12/07/2023 | Bronze |
| VOLKERLASER LTD | 03892871 | 04/07/2023 | Amber |
| VOLKERMATRIX LIMITED | 03298375 | 14/01/2025 | Not Trading |
| VOLKERRAIL GROUP LIMITED | 04930080 | 04/07/2023 | Silver |
| VOLKERRAIL LIMITED | 03184313 | 04/07/2023 | Silver |
| VOLKERRAIL PLANT LIMITED | 05113722 | 14/01/2025 | Not Trading |
| VOLKERRAIL POWER LIMITED | 03439458 | 14/01/2025 | Not Trading |
| VOLKERRAIL SIGNALLING LIMITED | 04417843 | 14/01/2025 | Not Trading |
| VOLKERRAIL SPECIALIST BUSINESSES LIMITED | 04197945 | 04/07/2023 | Silver |
| VOLKERRAIL WELDING LIMITED | 04417852 | 14/01/2025 | Not Trading |
| VOLKERSERVICES LIMITED | 03998767 | 04/07/2023 | Amber |
| VOLKERSTEVIN HOLDING LIMITED | 13092153 | 13/09/2023 | Silver |
| VOLKERSTEVIN INFRASTRUCTURE LIMITED | 07877543 | 13/09/2023 | Silver |
| VOLKERSTEVIN SPECIALIST BUSINESSES LIMITED | 00981398 | 04/07/2023 | Gold |
| VOLKERWESSELS LIMITED | 02001762 | 15/08/2023 | Silver |
| VOLKERWESSELS UK LIMITED | 01179305 | 17/05/2023 | Silver |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| KIER FLEET SERVICES LIMITED | 02127113 | 15/10/2019 | 31/01/2022 | Bronze |
| KIER PLANT LIMITED | 04233359 | 31/10/2019 | 31/01/2022 | Silver |
| TRADEDIRECT LOGISTICS LIMITED | 11400572 | 18/10/2019 | 31/01/2022 | One Red Flag |