| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Calsys Ltd | 03166246 | 01/08/1996 | Dissolved |
| MULTIPHASE MATERIALS CONSULTANTS LIMITED | 02357471 | 09/03/1992 | Dissolved |
| MULTIPHASE MATERIALS CONSULTANTS LIMITED | 02357471 | 09/03/1992 | Dissolved |
| Nustone Ltd | 03460450 | 06/03/1998 | Dissolved |
| P T S Consultancy Ltd | 01854278 | 19/12/1991 | Dissolved |
| Stats Consultancy Ltd | 02793160 | 17/02/1994 | Dissolved |
| Stats U K Ltd | 00986413 | 31/01/1992 | Dissolved |
| Teaching & Learning Enterprises Ltd | 03199845 | 03/06/1996 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| CONCRETE SOCIETY LIMITED(THE) | 00884419 | 02/08/2001 | 26/07/2007 | Gold |
| NUSTONE LIMITED | 06828536 | 24/02/2009 | 13/08/2011 | Dissolved |
| PARMITER'S SCHOOL | 07662765 | 07/07/2011 | 01/09/2014 | Silver |
| RSK STATS LIMITED | 02833839 | 23/09/1993 | 21/04/1999 | Dissolved |
| TALENT CONCRETE TRAINING LIMITED | 03945479 | 10/03/2000 | 22/08/2014 | One Red Flag |