| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ALDSWORTH LIMITED | 14907344 | 31/05/2023 | Bronze |
| PUBLIC DATA CORPORATION LTD | 07435485 | 10/11/2010 | Dissolved |
| ROLLS-ROYCE SMR LIMITED | 13039768 | 01/01/2024 | Silver |
| THE WELLCOME TRUST LIMITED | 02711000 | 06/11/2023 | Amber |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BNFL (INVESTMENTS US) LIMITED | 04394408 | 28/09/2009 | 27/02/2018 | Silver |
| BRITISH NUCLEAR GROUP LIMITED | 05245506 | 28/09/2009 | 27/02/2018 | Silver |
| CAF NOMINEES LIMITED | 01222415 | 23/09/2010 | 15/09/2016 | Not Trading |
| ENRICHMENT HOLDINGS LTD. | 06387705 | 14/03/2008 | 25/02/2013 | Silver |
| ENRICHMENT INVESTMENTS LIMITED | 04223635 | 01/04/2008 | 25/02/2013 | Gold |
| GREAT BRITISH NUCLEAR | 05027024 | 01/01/2009 | 27/02/2018 | Silver |
| GROSVENOR LIMITED | 02874626 | 04/02/2016 | 03/07/2024 | Silver |
| GROSVENOR UK FINANCE PLC | 04140116 | 10/01/2020 | 03/07/2024 | Silver |
| PARTNERSHIPS UK LIMITED | 03993425 | 30/04/2008 | 31/12/2010 | Dissolved |
| THE LONDON ORGANISING COMMITTEE OF THE OLYMPIC GAMES AND PARALYMPIC GAMES LIMITED | 05267819 | 23/10/2007 | 30/05/2013 | Dissolved |