| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| BLIGHT & WHITE LIMITED | 00190026 | 31/12/1990 | One Red Flag |
| Camel of Cornwall Ltd | 00651993 | 31/12/1990 | Dissolved |
| Ferrite Ltd | 03712541 | 11/02/1999 | Dissolved |
| G W S REALISATIONS LIMITED | 02318829 | 18/11/1991 | Insolvent |
| Hughes Engineers (Devon) Ltd | 01660499 | 31/12/1990 | Dissolved |
| Hughes,E D,Engineers Ltd | 00940015 | 31/12/1990 | Dissolved |
| Wood,Graham,Plc | 01672866 | 31/08/1991 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| STEEL CONSTRUCTION INSTITUTE(THE) | 01916698 | 29/11/1991 | 30/11/2000 | Bronze |
| VULCAN SOLUTIONS LIMITED | 05151771 | 10/10/2005 | 27/09/2012 | Silver |