| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Fieldhead College Ltd | 00989767 | 12/12/1995 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| 600 CENTRE LIMITED | 00264657 | 01/01/1993 | 25/01/2006 | Dissolved |
| 600 GROUP (OVERSEAS) LIMITED (THE) | 00599171 | 11/12/1998 | 25/01/2006 | One Red Flag |
| 600 GROUP PUBLIC LIMITED COMPANY(THE) LIMITED | 00196730 | 01/10/1994 | 31/07/2007 | Bronze |
| 600 TRADING LIMITED | 00910282 | 23/12/1992 | 01/12/1994 | Dissolved |
| COLCHESTER MACHINE TOOL SOLUTIONS LTD | 00144979 | 10/08/1992 | 25/01/2006 | Silver |
| CONTRACTORS 600 LIMITED | 00488802 | 01/01/1993 | 25/01/2006 | Dissolved |
| E.E.F. TRUSTEES LIMITED | 00727080 | 24/04/2002 | 05/08/2009 | Dissolved |
| EEF SPF TRUSTEES LTD. | 03697516 | 19/06/2006 | 05/11/2009 | Dissolved |
| FIELDHEAD ENGINEERING EMPLOYERS LIMITED | 00907153 | 12/12/1995 | 09/12/2008 | Dissolved |
| GCS (STEELS) LIMITED | 00742960 | 12/01/1998 | 25/01/2006 | Dissolved |
| PACIFIC SHELF 1790 LIMITED | 00276503 | 02/12/1991 | 25/01/2006 | Dissolved |
| PACIFIC SHELF 1791 LIMITED | 00698709 | 16/02/1996 | 25/01/2006 | Dissolved |
| PACIFIC SHELF 1794 LIMITED | 00375668 | 06/08/1991 | 25/01/2006 | Dissolved |
| PACIFIC SHELF 1796 LIMITED | 00528206 | 19/02/1996 | 25/01/2006 | Dissolved |
| PACIFIC SHELF 1797 LIMITED | 01466005 | 26/01/1998 | 25/01/2006 | Dissolved |
| PACIFIC SHELF 1798 LIMITED | 00261746 | 16/02/1996 | 25/01/2006 | Dissolved |
| SYKES MACHINE TOOL COMPANY LIMITED | 00545120 | 01/01/1993 | 25/01/2006 | Dissolved |
| THE MANUFACTURING TECHNOLOGIES ASSOCIATION | 00154271 | 06/07/1995 | 26/11/2009 | Silver |