| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| 00771532 LIMITED | 00771532 | 26/03/1994 | Insolvent |
| Braintree Foundries Ltd | 02411091 | 03/08/1991 | Dissolved |
| Cook,William,Foundries Ltd | SC011122 | 04/08/1988 | Dissolved |
| E.JOPLING & SONS LIMITED | 00076999 | 23/12/1994 | Insolvent |
| Holbrook Steel Castings Ltd | 00102395 | 26/07/1991 | Dissolved |
| Lloyds Burton Alloys Ltd | 02484226 | 22/03/1992 | Dissolved |
| MECH CAST LIMITED | 00902837 | 19/09/1991 | Dissolved |
| Metakal Foundries Ltd | 01863377 | 23/12/1994 | Dissolved |
| Steel Castings Investments Ltd | 03324246 | 20/02/1997 | Dissolved |
| Steel Castings Research Ltd | 01306167 | 26/03/1994 | Dissolved |
| Wilco Investments Limited | 02560809 | 21/11/1991 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| 191 SUTHERLAND AVENUE LIMITED | 03005711 | 04/01/1995 | 30/09/2001 | Not Trading |
| British Metal Casting Association | 03308408 | 09/10/1997 | 30/06/1999 | Dissolved |
| Brookside Engineering (Tutbury) Ltd | 02109195 | 18/09/1992 | 17/03/1993 | Dissolved |
| CUTLERS' HALL PRESERVATION TRUST LIMITED(THE) | 01655467 | 24/10/1992 | 24/10/1992 | Bronze |
| Castings Technology International | 00516791 | 27/12/1990 | 05/12/1991 | Dissolved |
| FROGGATT TRUSTEE LIMITED | 03839063 | 10/09/1999 | 16/12/2004 | Not Trading |
| HI-TEC INTEGRITY CASTINGS LIMITED | 01530392 | 26/07/1991 | 26/02/2003 | Dissolved |
| Nowaction Ltd | 00457622 | 07/01/1998 | 20/10/1999 | Dissolved |
| WILLIAM COOK HOLDINGS LIMITED | 03283010 | 01/07/2003 | 23/06/2004 | Silver |
| WILLIAM COOK INTERMODAL LIMITED | 01483687 | 27/03/1994 | 08/10/1996 | Amber |
| WILLIAM COOK NDT LIMITED | 01011570 | 26/03/1994 | 08/04/2003 | Dissolved |
| WILLIAM COOK PROPERTIES LIMITED | 02362462 | 01/09/1991 | 23/12/1994 | Bronze |