| Name | Company Number | Date Appointed | Rating |
|---|
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AGGREGATE INDUSTRIES SOUTH WEST LIMITED | 00618547 | 26/04/1992 | 28/02/1995 | Not Trading |
| AI PROPERTIES LIMITED | 00988051 | 16/01/1993 | 30/06/1995 | Gold |
| BRITISH PRECAST CONCRETE FEDERATION LIMITED(THE) | 01209092 | 04/05/2000 | 31/12/2008 | Gold |
| Concrete Materials (Newton Abbot) Ltd | 00458158 | 16/01/1993 | 30/06/1995 | Dissolved |
| EUSTON HOLDINGS LIMITED | 02465642 | 04/03/1994 | 30/06/1995 | Dissolved |
| EXBIRCO 1 LIMITED | 00788201 | 01/08/1995 | 31/05/2001 | Dissolved |
| EXBIRCO 2 LIMITED | 02779829 | 01/08/1995 | 31/05/2001 | Dissolved |
| HANSON (SH) LIMITED | 05393344 | 15/05/2007 | 24/12/2008 | Gold |
| HANSON PACKED PRODUCTS LIMITED | 00026306 | 04/01/2005 | 24/12/2008 | Gold |
| INSTITUTE OF QUARRYING(THE) | 00606601 | 31/10/1991 | 11/10/1996 | One Red Flag |
| IRVINE-WHITLOCK LIMITED | 00870262 | 01/03/2007 | 24/12/2008 | Amber |
| Meldon Quarry Ltd | 02236070 | 04/03/1994 | 30/06/1995 | Dissolved |
| STRUCTHERM LIMITED | 01635024 | 15/05/2007 | 24/12/2008 | Bronze |