| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Epic Training & Consulting Services Ltd | 05041949 | 12/02/2004 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| C. & G. CONCRETE LIMITED | 00613713 | 01/08/2005 | 25/01/2013 | Dissolved |
| CASTLE PENSION SCHEME TRUSTEES LIMITED | 07656439 | 02/06/2011 | 25/01/2013 | Not Trading |
| CHB P H R LIMITED | 02670582 | 24/03/2010 | 25/01/2013 | Bronze |
| ELECTRICITY PENSIONS LIMITED | 02416242 | 22/03/2010 | 25/01/2013 | One Red Flag |
| HANSON CREWING SERVICES LIMITED | 04246641 | 01/10/2001 | 15/04/2009 | Not Trading |
| HANSON LIMITED | 04626078 | 24/03/2010 | 25/01/2013 | Silver |
| HANSON QUARRY PRODUCTS EUROPE LIMITED | 00300002 | 26/09/2005 | 25/01/2013 | Gold |
| HEIDELBERG MATERIALS CEMENT HOLDING LIMITED | 02201396 | 24/03/2010 | 25/01/2013 | Gold |
| HIPS (TRUSTEES) LIMITED | 03942183 | 03/12/2009 | 25/01/2013 | Not Trading |
| INSTITUTE OF QUARRYING(THE) | 00606601 | 12/10/2000 | 29/09/2015 | One Red Flag |
| MINERAL PRODUCTS ASSOCIATION LIMITED | 01634996 | 15/11/2006 | 31/12/2008 | Silver |
| MINERAL PRODUCTS QUALIFICATIONS COUNCIL | 01695822 | 07/01/2004 | 03/10/2005 | Bronze |
| PROSKILLS UK | 04640647 | 08/11/2006 | 31/08/2012 | Dissolved |