| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| HAMBURG TECHNOLOGY PARK PROPERTY MANAGEMENT COMPANY LIMITED | 05812725 | 15/01/2008 | Bronze |
| Linelevel Ltd | 03812418 | 06/09/1999 | Dissolved |
| SPECIALIST MARINE HOLDINGS LIMITED | 06422169 | 08/11/2007 | Dissolved |
| SPECIALIST MARINE HOLDINGS LIMITED | 06422169 | 08/11/2007 | Dissolved |
| SPECIALIST MARINE SERVICES LIMITED | 02677851 | 21/01/1992 | Dissolved |
| Sms Logistics Ltd | 04456014 | 06/06/2002 | Dissolved |
| Specialist Marine Salvors Ltd | 02914012 | 29/03/1994 | Dissolved |
| THE UNIVERSITY OF HULL MARITIME HISTORY TRUST | 03714387 | 01/01/2017 | Silver |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BELFAST TOWAGE LIMITED | NI619985 | 09/11/2023 | 24/05/2024 | Bronze |
| BOLUDA TOWAGE SMS (BRISTOL CHANNEL) LIMITED | 07874065 | 07/12/2011 | 24/05/2024 | One Red Flag |
| BOLUDA TOWAGE SMS LIMITED | 04527156 | 05/09/2002 | 24/05/2024 | Silver |
| Clyde Consultants Ltd | SC152441 | 28/02/2000 | 31/10/2001 | Dissolved |
| Nore Maritime Shipping Ltd | 03755035 | 01/10/1999 | 19/09/2000 | Dissolved |
| SPECIALIST MARINE SERVICES LIMITED | 02677851 | 21/01/1992 | 15/09/1995 | Dissolved |
| UNITED SALVAGE LIMITED | 00229347 | 19/09/1991 | 20/01/1992 | Dissolved |