| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| CAMECO UK LTD | 14784669 | 14/11/2023 | Bronze |
| DEVONPORT ROYAL DOCKYARD LIMITED | 02077752 | 15/09/2021 | One Red Flag |
| LUTHO SERVICES LIMITED | 13783771 | 06/12/2021 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BABCOCK MARINE (CLYDE) LIMITED | SC220243 | 12/11/2021 | 30/11/2023 | Silver |
| BABCOCK SERVICES GROUP LIMITED | 03939840 | 01/09/2021 | 24/11/2023 | Silver |
| CAVENDISH BOCCARD NUCLEAR LIMITED | 08335068 | 01/09/2021 | 06/05/2024 | Amber |
| CAVENDISH DOUNREAY PARTNERSHIP LIMITED | 07868218 | 21/05/2020 | 06/05/2024 | Gold |
| CAVENDISH FLUOR PARTNERSHIP LIMITED | 08980374 | 01/09/2021 | 06/05/2024 | Amber |
| CAVENDISH NUCLEAR (OVERSEAS) LIMITED | 05339062 | 01/09/2021 | 30/11/2023 | Not Trading |
| CAVENDISH NUCLEAR LIMITED | 03975999 | 24/06/2020 | 09/10/2024 | Silver |
| NUCLEAR INDUSTRY ASSOCIATION | 02804518 | 29/09/2016 | 31/12/2020 | Gold |
| RIVER GARDENS MANAGEMENT COMPANY LIMITED | 02172489 | 31/10/2020 | 06/08/2022 | Gold |
| U-BATTERY DEVELOPMENTS LIMITED | 06441954 | 31/12/2014 | 10/01/2018 | Dissolved |
| U-BATTERY LIMITED | 07479467 | 13/05/2014 | 10/01/2018 | Dissolved |
| URENCO ENRICHMENT COMPANY LIMITED | 04696557 | 13/05/2014 | 31/07/2019 | Gold |