| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| AWBS LIMITED | 05083600 | 07/06/2004 | Dissolved |
| AWI OUTSOURCING LTD | 03307075 | 20/03/2006 | Bronze |
| AWI OUTSOURCING LTD | 03307075 | 01/05/1997 | Bronze |
| BLIGHT & WHITE LIMITED | 00190026 | 31/12/1990 | One Red Flag |
| BS2 (2011) LIMITED | 07540482 | 01/06/2011 | Dissolved |
| Camel of Cornwall Ltd | 00651993 | 31/12/1990 | Dissolved |
| G W S REALISATIONS LIMITED | 02318829 | 18/11/1991 | Insolvent |
| H M R Realizations Ltd | 01287465 | 31/12/1990 | Dissolved |
| Hewgate (Holdings) Ltd | 00604798 | 31/12/1990 | Dissolved |
| Hewgate Construction Ltd | 00540091 | 31/12/1990 | Dissolved |
| Hewgate Properties Ltd | 00763041 | 31/12/1990 | Dissolved |
| Hillgrade Ltd | 01988518 | 31/12/1990 | Dissolved |
| Loudhams Wood Estates Ltd | 00329902 | 18/12/1991 | Dissolved |
| Wood,Graham,Plc | 01672866 | 31/08/1991 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ATLAS (SHERBURN) LTD | 03813772 | 01/09/1999 | 09/07/2004 | Dissolved |
| ATLAS WARD BUILDING SYSTEMS LIMITED | 03303086 | 15/05/1997 | 09/07/2004 | Dissolved |
| ATLAS WARD HOLDINGS LIMITED | 03307099 | 01/05/1997 | 09/07/2004 | Dissolved |
| ATLAS WARD LIMITED | 03745316 | 01/06/1999 | 09/07/2004 | Dissolved |
| AW EUROPEAN HOLDINGS LIMITED | 04107407 | 07/12/2000 | 09/07/2004 | Dissolved |
| AWBS LIMITED | 05083600 | 07/06/2004 | 01/09/2004 | Dissolved |
| AWS HOLDINGS LIMITED | 04107409 | 07/12/2000 | 09/07/2004 | Dissolved |
| BCSA LIMITED | 00895252 | 10/05/1995 | 10/05/2000 | Silver |
| CHINA - BRITAIN BUSINESS COUNCIL | 06291886 | 28/06/2007 | 29/06/2010 | Bronze |
| FABSEC LIMITED | 04153086 | 21/05/2001 | 10/04/2003 | Bronze |
| RYEDALE STRUCTURES LIMITED | 04032409 | 01/05/2001 | 09/07/2004 | Dissolved |
| SAFETY IN STEEL CONSTRUCTION LIMITED | 05853924 | 21/06/2006 | 19/06/2007 | Dissolved |
| SEVERFIELD (DESIGN & BUILD) LIMITED | 04107553 | 07/12/2000 | 09/07/2004 | Silver |
| SISC LIMITED | 05853920 | 21/06/2006 | 19/06/2007 | Dissolved |
| STEEL CONSTRUCTION CERTIFICATION SCHEME LIMITED | 02370407 | 12/07/2001 | 19/06/2007 | Bronze |
| STEEL CONSTRUCTION INSTITUTE(THE) | 01916698 | 13/11/2003 | 30/06/2005 | Silver |
| THE BRITISH CONSTRUCTIONAL STEELWORK ASSOCIATION LIMITED | 02457906 | 12/07/2001 | 19/06/2007 | Bronze |
| THE SALFORD VALVE COMPANY LTD | 03371104 | 20/03/2006 | 28/01/2019 | Amber |