| Name | Company Number | Date Appointed | Rating |
|---|
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ASSOCIATION OF CONSTRUCTION ENGINEERS | 02806431 | 25/03/2009 | 06/11/2014 | Not Trading |
| CONCRETE ADVISORY SERVICE LIMITED | 02140861 | 25/09/2002 | 30/01/2009 | Silver |
| CONCRETE BRIDGE DEVELOPMENT GROUP | 02693085 | 10/06/1993 | 28/06/1994 | Gold |
| CONCRETE INFORMATION LIMITED | 04186830 | 13/05/2002 | 30/01/2009 | Gold |
| CONCRETE SOCIETY LIMITED(THE) | 00884419 | 31/07/2002 | 30/01/2009 | Gold |
| ETON AGGREGATES LIMITED | 02950542 | 20/05/1997 | 21/04/1999 | Dissolved |
| INSTITUTE OF CONCRETE TECHNOLOGY(THE) | 01895185 | 30/06/2007 | 30/01/2009 | Gold |
| INSTITUTION OF CONSTRUCTION ENGINEERS | 02806430 | 25/03/2009 | 06/11/2014 | Not Trading |
| ISLAND BARN AGGREGATES LIMITED | 01486232 | 01/05/1997 | 01/10/2001 | Gold |
| ISTRUCTE LTD | 02444141 | 23/02/2016 | 21/05/2019 | Gold |
| QUALITY SCHEME FOR READY MIXED CONCRETE(THE) | 01811703 | 08/10/1998 | 15/11/2001 | Gold |
| STRUCTURAL ENGINEERS REGISTRATION LIMITED | 05251866 | 27/05/2009 | 05/03/2014 | Gold |
| STRUCTURAL-SAFETY LIMITED | 11750936 | 01/04/2021 | 01/12/2023 | Bronze |
| THE INTERNATIONAL GLASSFIBRE REINFORCED CONCRETE ASSOCIATION | 01398450 | 17/03/2005 | 30/01/2009 | Silver |