| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| N.I. ENTERPRISES LIMITED | 06769477 | 18/05/2018 | Strike Off |
| SELLAFIELD LIMITED | 01002607 | 25/11/2024 | Silver |
| THE NUCLEAR INSTITUTE | 06574762 | 18/05/2018 | Silver |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BILFINGER CONSTRUCTION UK LIMITED | 02418086 | 22/07/2020 | 25/04/2022 | Silver |
| BILFINGER PIPING TECHNOLOGIES UK LIMITED | 10027762 | 24/02/2021 | 15/04/2022 | One Red Flag |
| BILFINGER UK LIMITED | 05384376 | 20/07/2020 | 25/04/2022 | Silver |
| NATIONAL NUCLEAR CORPORATION LIMITED | 02290928 | 16/09/2011 | 31/03/2014 | One Red Flag |
| VBA JOINT VENTURE LIMITED | 08594964 | 24/10/2023 | 08/11/2024 | Bronze |
| WOOD FINANCE UK LIMITED | 03725076 | 01/10/2017 | 06/03/2020 | Silver |