| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| A.K.S. Developments Limited | 02293438 | 30/11/1991 | Dissolved |
| DWL CONSULTANTS LIMITED | 05775058 | 10/04/2006 | Dissolved |
| Eurocode Consultants Ltd | 02823434 | 06/04/2004 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ABCS (GUILDFORD) LIMITED | 00672910 | 21/05/1998 | 07/04/2004 | Dissolved |
| ANDREWS, KENT & STONE LIMITED | 02793399 | 10/03/1993 | 25/05/1999 | Amber |
| BCSA LIMITED | 00895252 | 07/05/1997 | 05/03/1998 | Silver |
| BRITISH STANDARDS (PUBLISHING) LIMITED | 03909666 | 14/01/2000 | 26/06/2002 | Dissolved |
| BSI BRITISH STANDARDS LIMITED | 03555090 | 30/05/2000 | 31/10/2003 | Dissolved |
| British Standards (Publishing) Sales Ltd | 03909632 | 14/01/2000 | 25/06/2002 | Dissolved |
| Bsi Quality Assurance Services Ltd | 01529919 | 04/01/1999 | 31/10/2003 | Dissolved |
| ISTRUCTE LTD | 02444141 | 10/09/1991 | 05/10/1995 | Silver |
| STEEL CONSTRUCTION INSTITUTE(THE) | 01916698 | 29/11/1991 | 20/04/1998 | Bronze |
| THE INSTITUTION OF STRUCTURAL ENGINEERS EDUCATIONAL TRUST | 02572820 | 10/01/1992 | 27/08/1993 | Dissolved |