| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Shipowners Protection & Indemnity Association Ltd | 00173629 | 21/09/2000 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ASCO (DC2) LIMITED | 05898050 | 25/10/2006 | 21/12/2011 | Amber |
| ASCO (DC3) LIMITED | 05916071 | 25/10/2006 | 21/12/2011 | One Red Flag |
| ASCO (DC4) LIMITED | 05898058 | 25/10/2006 | 21/12/2011 | One Red Flag |
| ASCO MARINE LIMITED | SC316087 | 20/07/2007 | 21/12/2011 | Amber |
| BOSTON PUTFORD OFFSHORE SAFETY LIMITED | 00455971 | 05/07/2002 | 21/04/2004 | Amber |
| BRITISH MARINE LIMITED | 03821514 | 01/02/2008 | 04/11/2008 | Gold |
| Bruce Marine Ltd | SC110954 | 04/05/2001 | 21/04/2004 | Dissolved |
| CORMAR LIMITED | 00166220 | 11/03/1993 | 17/11/1994 | Dissolved |
| EXEL LIMITED | 00073975 | 01/12/1992 | 31/12/1997 | Gold |
| GLOBE WIRELESS (UK) LIMITED | 02380744 | 10/05/1999 | 04/07/2007 | Dissolved |
| GLOBE WIRELESS UK HOLDINGS LIMITED | 03752538 | 07/05/1999 | 04/07/2007 | Dissolved |
| HULL,BLYTH(ANGOLA)LIMITED | 00116788 | 01/06/1991 | 29/11/1991 | One Red Flag |
| Haven Shipping Co Ltd | SC044380 | 04/05/2001 | 21/04/2004 | Dissolved |
| Lobster Ltd | 00329213 | 01/06/1991 | 20/05/1993 | Dissolved |
| MSAS LIMITED | 00314709 | 01/06/1991 | 31/07/1992 | Dissolved |
| O I L Gulf Ltd | SC051607 | 02/06/1989 | 01/08/1992 | Dissolved |
| O I L Marine Ltd | 01556284 | 01/06/1991 | 01/08/1992 | Dissolved |
| O.I.L. (Endeavour) Ltd | 00110833 | 01/06/1991 | 01/02/1993 | Dissolved |
| O.I.L. ENGINEERING LIMITED | SC072717 | 02/06/1989 | 01/06/1990 | Dissolved |
| OCEAN (SHETLAND) LIMITED | SC052612 | 02/06/1989 | 01/06/1990 | Dissolved |
| Ocean (Ofl) Ltd | 00905200 | 01/06/1992 | 30/12/1997 | Dissolved |
| Ocean (Tml) Ltd | 01776305 | 01/06/1991 | 31/12/1996 | Dissolved |
| Ocean Cory Trading (1993) Ltd | 00145773 | 01/06/1991 | 15/11/1993 | Dissolved |
| Ocean Group Exploration Ltd | 01596148 | 15/11/1993 | 23/01/1995 | Dissolved |
| Ocean Marine Services Division Ltd | 00971231 | 08/02/1992 | 17/09/1992 | Dissolved |
| Ottto Ltd | 01255996 | 01/06/1991 | 30/12/1994 | Dissolved |
| SEACOR CAPITAL (UK) LIMITED | 03952530 | 09/01/2001 | 21/04/2004 | Bronze |
| SEACOR INTERNATIONAL LIMITED | 03289386 | 11/12/2001 | 21/04/2004 | Dissolved |
| SEACOR MARINE (INTERNATIONAL) LIMITED | 04325263 | 20/11/2001 | 21/04/2004 | Silver |
| STIRLING MARINE LIMITED | SC108613 | 04/05/2001 | 21/04/2004 | Dissolved |
| STIRLING OFFSHORE LIMITED | SC041594 | 04/05/2001 | 21/04/2004 | Amber |
| STIRLING SHIPPING COMPANY LIMITED | SC159842 | 04/05/2001 | 21/04/2004 | Silver |
| STIRLING SHIPPING HOLDINGS LIMITED | SC212855 | 04/05/2001 | 21/04/2004 | Silver |
| SVITZER MARINE LIMITED | 00069494 | 01/06/1991 | 30/12/1997 | Gold |
| Seacor-Smit Holdings B.V. | FC023034 | 27/02/2001 | 01/11/2003 | Dissolved |
| Shetland Engineers Ltd | SC058701 | 02/06/1989 | 22/09/1989 | Dissolved |
| Smit & Cory International Port Towage Ltd | 00977302 | 01/06/1991 | 18/04/1994 | Dissolved |
| Stirling Shipmanagement Ltd | SC182248 | 04/05/2001 | 21/04/2004 | Dissolved |
| Strategic Software Ltd | 01693711 | 30/10/2000 | 07/05/2002 | Dissolved |
| THE CHAMBER OF SHIPPING LIMITED | 02107383 | 07/06/1992 | 25/11/1997 | Silver |
| THE STANDARD STEAMSHIP OWNERS' MUTUAL WAR RISKS ASSOCIATION LIMITED | 00127257 | 03/12/1996 | 06/05/1997 | Dissolved |
| TIDEWATER MARINE NORTH SEA LIMITED | 01000605 | 01/06/1991 | 16/05/1997 | Dissolved |
| TIDEWATER SUPPORT SERVICES LIMITED | 00935061 | 01/06/1991 | 30/12/1994 | One Red Flag |
| Transit (Boston) Ltd | 00463200 | 01/12/1994 | 31/12/1996 | Dissolved |
| Transit Port Services (1994) Ltd | 00829845 | 08/02/1993 | 11/08/1994 | Dissolved |