| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| FROST ELECTROPLATING LIMITED | 03916194 | 28/01/2005 | Silver |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ABRASIVE TECHNOLOGY LIMITED | 02874855 | 01/03/1994 | 07/07/1998 | Silver |
| BEAKBANE LIMITED | 00534430 | 01/01/2006 | 21/10/2016 | Gold |
| Belsize Holdings Ltd | 03064092 | 17/08/1995 | 01/02/2000 | Dissolved |
| Charles S.Madan & Company Ltd | 00064835 | 16/01/1993 | 25/05/1993 | Dissolved |
| EMPLOYEE OWNERSHIP ASSOCIATION | 01419899 | 08/05/2014 | 30/09/2016 | Silver |
| FENNER GROUP HOLDINGS LIMITED | 00329377 | 16/01/1993 | 28/05/1993 | Silver |
| FENNER INTERNATIONAL LIMITED | 00527338 | 16/01/1993 | 28/05/1993 | Silver |
| I G SOFTWARE LIMITED | 03709143 | 14/06/2001 | 10/08/2007 | Dissolved |
| IMMATERIAL LTD | 09829727 | 02/12/2016 | 18/12/2020 | Amber |
| J.H. FENNER & CO. LIMITED | 00527331 | 16/01/1993 | 28/05/1993 | One Red Flag |
| MALLARDHAVEN H.C. LIMITED | 01757038 | 11/02/1994 | 18/06/1998 | Dissolved |
| METRODE PRODUCTS LIMITED | 00769971 | 28/04/2000 | 31/10/2006 | Dissolved |
| MONKEY TOWER LTD | 04773290 | 23/10/2006 | 07/02/2017 | Gold |
| N.T.FROST LIMITED | 00247288 | 26/04/2003 | 21/04/2005 | Not Trading |
| THERMOFLUIDICS LTD. | 05699418 | 12/02/2008 | 24/12/2009 | Gold |
| W.B. BAWN AND CO. LIMITED | 00094424 | 28/02/2001 | 22/09/2001 | Dissolved |