| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Dalriada Shipping Ltd | SC055981 | 02/05/1989 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AIDEN SHIPPING COMPANY LIMITED | SC051078 | 29/12/1988 | 30/03/1995 | Dissolved |
| MARINE MANAGEMENT (HOLDINGS) LIMITED | 01100685 | 26/05/1993 | 09/12/1997 | Silver |
| SOCIETY OF CONSULTING MARINE ENGINEERS AND SHIP SURVEYORS(THE) | 00164726 | 20/04/1991 | 23/04/1993 | Gold |
| STIRLING MARINE LIMITED | SC108613 | 18/02/1988 | 24/06/1989 | Dissolved |
| THE INSTITUTION OF ENGINEERS IN SCOTLAND | SC000358 | 01/08/1999 | 31/07/2002 | Amber |
| THE LOCH LOMOND STEAMSHIP COMPANY | SC160932 | 12/11/1997 | 06/03/2003 | One Red Flag |
| THE PADDLE STEAMER PRESERVATION SOCIETY | 02167853 | 06/11/1999 | 06/03/2003 | Gold |
| WESTERN FERRIES (ARGYLL) LIMITED | SC044778 | 29/12/1988 | 30/03/1995 | Dissolved |
| WESTERN FERRIES (CLYDE) LIMITED | SC091850 | 21/09/1989 | 07/03/2003 | Silver |
| WOODSIDE CRESCENT MANAGEMENT LIMITED | SC031250 | 02/11/1988 | 30/03/1995 | Dissolved |