| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Bnfl (Ip) Ltd | 04394355 | 30/06/2008 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BNFL (INVESTMENTS US) LIMITED | 04394408 | 01/02/2009 | 30/09/2009 | Silver |
| BRITISH NUCLEAR GROUP LIMITED | 05245506 | 01/02/2009 | 30/09/2009 | Silver |
| BRITISH NUCLEAR GROUP LIMITED | 05245506 | 22/11/2007 | 30/09/2009 | Silver |
| Bnfl Enterprise Ltd | 02287441 | 20/12/2001 | 14/02/2003 | Dissolved |
| GREAT BRITISH NUCLEAR | 05027024 | 01/02/2009 | 18/05/2021 | Silver |
| NEXIA SOLUTIONS LIMITED | 06729401 | 01/02/2009 | 21/10/2009 | Not Trading |
| Nuclear Flask Hire Ltd | 03235449 | 08/08/1996 | 21/04/1997 | Dissolved |
| SELLAFIELD LIMITED | 01002607 | 29/11/2007 | 24/11/2008 | Silver |
| SPRINGFIELDS FUELS LIMITED | 03857770 | 01/04/2005 | 02/10/2006 | Gold |
| UNITED KINGDOM NATIONAL NUCLEAR LABORATORY LIMITED | 03857752 | 01/02/2009 | 07/09/2009 | Silver |
| UNITED KINGDOM NATIONAL NUCLEAR LABORATORY LIMITED | 03857752 | 01/11/2007 | 07/09/2009 | Silver |
| URANIUM ASSET MANAGEMENT LIMITED | 03162046 | 01/04/2005 | 04/07/2005 | Gold |
| WESTINGHOUSE ELECTRIC UK HOLDINGS LIMITED | 02458109 | 01/04/2005 | 02/10/2006 | Bronze |