| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ALMADAH CONSULTING LTD | SC562442 | 04/04/2017 | Dissolved |
| Dick,Andrew,& Son (Engineers) Ltd | SC074635 | 18/11/1988 | Dissolved |
| Dick,Andrew,Holdings Ltd | SC115470 | 06/01/1989 | Dissolved |
| SAFETY IN STEEL CONSTRUCTION LIMITED | 05853924 | 19/06/2007 | Dissolved |
| SISC LIMITED | 05853920 | 19/06/2007 | Dissolved |
| Sanderson Structures & Design Ltd | SC125348 | 14/11/1990 | Dissolved |
| Sanderson Structures Ltd | SC077617 | 18/11/1988 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BCSA LIMITED | 00895252 | 11/02/1999 | 25/02/2003 | Gold |
| CAIRNHILL STRUCTURES LIMITED | SC071351 | 05/01/1993 | 06/04/2011 | Silver |
| FINDLAY CAMPBELL (BLACKSMITHS) LIMITED | SC223496 | 24/09/2001 | 31/03/2011 | Dissolved |
| FINDLAY CAMPBELL (BLACKSMITHS) LIMITED | SC223496 | 24/09/2001 | 31/03/2011 | Dissolved |
| STEEL CONSTRUCTION CERTIFICATION SCHEME LIMITED | 02370407 | 19/06/2007 | 26/06/2014 | Bronze |
| THE BRITISH CONSTRUCTIONAL STEELWORK ASSOCIATION LIMITED | 02457906 | 19/06/2007 | 26/06/2014 | Bronze |
| W LIVINGSTONE (ENGINEERS) LTD. | SC056405 | 18/11/1988 | 01/08/1990 | Insolvent |