| Name | Company Number | Date Appointed | Rating |
|---|
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| Andrew Cumming Design Associates Limited | SC053496 | 20/11/1989 | 01/03/1993 | Dissolved |
| CLARK & STANDFIELD LIMITED | 00455673 | 03/01/1992 | 17/03/1993 | Gold |
| Newshott Holdings Ltd | SC051136 | 17/05/1989 | 23/03/1993 | Dissolved |
| SIR J.H.BILES & CO.LIMITED | 00925251 | 04/01/1992 | 17/03/1993 | Gold |
| THE INSTITUTION OF ENGINEERS AND SHIPBUILDERS IN SCOTLAND LTD | SC189633 | 07/05/1999 | 08/07/2003 | Not Trading |
| THE INSTITUTION OF ENGINEERS IN SCOTLAND | SC000358 | 01/08/1996 | 25/07/2003 | Amber |
| THE INSTITUTION OF ENGINEERS IN SCOTLAND | SC000358 | 22/05/1990 | 31/07/1994 | Amber |
| THE TALL SHIP GLENLEE TRUST | SC128338 | 24/02/1999 | 16/02/2001 | Bronze |
| WAVERLEY EXCURSIONS LIMITED | SC070945 | 10/08/1998 | 27/10/2005 | Bronze |
| WAVERLEY STEAM NAVIGATION CO. LIMITED | SC050789 | 01/02/2006 | 28/03/2014 | Silver |