| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| MARINE MANAGEMENT (HOLDINGS) LIMITED | 01100685 | 01/07/2020 | Silver |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BMT SHIP & COASTAL DYNAMICS LIMITED | 02853718 | 19/01/1996 | 17/04/2009 | Dissolved |
| LLOYD'S REGISTER GMT LIMITED | 06428883 | 31/03/2015 | 25/12/2017 | Silver |
| MARINE EXHIBITIONS LIMITED | 09235513 | 01/07/2020 | 31/01/2024 | One Red Flag |
| MARINE MANAGEMENT (HOLDINGS) LIMITED | 01100685 | 01/07/2020 | 18/01/2024 | Silver |
| MARINE PEOPLE LIMITED | 10632568 | 14/12/2020 | 02/01/2024 | One Red Flag |
| MCMURDO LIMITED | 06952856 | 18/06/2018 | 16/11/2019 | Gold |
| MLA COLLEGE LTD | 09188277 | 01/07/2020 | 16/12/2022 | Silver |
| SAFRAN ELECTRONICS & DEFENSE UK LTD | 08013669 | 18/06/2018 | 16/11/2019 | Not Trading |
| SEASAFE MARINE SOFTWARE & COMPUTATION (UK) LIMITED | 03791480 | 01/12/2016 | 22/11/2017 | One Red Flag |