| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Allen Socket Screws Limited | 02069510 | 31/10/1991 | Dissolved |
| DANAHER UK INDUSTRIES LIMITED | NF004190 | 10/05/2007 | Dissolved |
| Danaher Tool Group Holdings Ltd | 02756888 | 24/11/1992 | Dissolved |
| Frank Guylee & Son Limited | 02068815 | 31/10/1991 | Dissolved |
| Spline Gauges Ltd | 00739115 | 11/10/2000 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ABBEY LANE MANAGEMENT COMPANY LIMITED | 04232863 | 22/06/2005 | 24/07/2009 | Gold |
| DUKI (2006) FINANCE LIMITED | 02815444 | 29/06/2001 | 11/03/2008 | Dissolved |
| PICCADILLY PRECISION ENGINEERING LIMITED | 01389641 | 11/10/2000 | 11/03/2008 | Dissolved |
| Qualitrol Instruments Ltd | 00908666 | 31/10/1991 | 28/11/1994 | Dissolved |
| TGA INDUSTRIES LIMITED | 06020956 | 13/12/2006 | 11/03/2008 | Silver |
| THE SHEFFIELD AND DISTRICT SOCIETY OF MODEL AND EXPERIMENTAL ENGINEERS LIMITED | 02859595 | 19/04/2013 | 16/01/2022 | Gold |
| The Jacobs Manufacturing Co Ltd | 02068812 | 31/10/1991 | 11/03/2008 | Dissolved |
| VICTORIA ROAD (TAMWORTH) MANAGEMENT COMPANY LIMITED | 03553199 | 30/09/2003 | 26/11/2010 | Amber |
| VIDEOJET TECHNOLOGIES LIMITED | 06020951 | 13/12/2006 | 11/03/2008 | Bronze |