| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Quadrant Assemblies Ltd | 02641699 | 27/07/2007 | Dissolved |
| Quadrant Meter Co. Ltd | 00366940 | 27/07/2007 | Dissolved |
| Sts Fabrication Ltd | 04306178 | 11/10/2004 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AVON POLYMER PRODUCTS LIMITED | 00149360 | 25/06/1991 | 03/06/1996 | Bronze |
| AVON-AMES LIMITED | 01105896 | 25/06/1991 | 03/06/1996 | Dissolved |
| Abb Brighouse Ltd | 00902152 | 13/11/1997 | 30/04/1999 | Dissolved |
| CHELSEA QUILT COMPANY LIMITED | 00453869 | 04/10/1992 | 03/06/1996 | Not Trading |
| DEFENCE MANUFACTURERS ASSOCIATION (THE) | 01264602 | 30/09/1993 | 06/01/1994 | Dissolved |
| ELSTER METERING HOLDINGS LIMITED | 00096223 | 21/02/1997 | 23/04/1999 | Amber |
| FARSOUND AVIATION LIMITED | 01989923 | 21/10/2008 | 04/07/2011 | Gold |
| FORMLINE LIMITED | 06180716 | 13/04/2007 | 31/08/2011 | Dissolved |
| KEY TECHNOLOGIES LIMITED | 06515775 | 01/04/2008 | 01/04/2012 | Silver |
| MORS SMITT UK LTD | 03280530 | 11/10/2004 | 28/04/2011 | Insolvent |
| PRIMETAKE LIMITED | 07173439 | 30/04/2010 | 01/04/2012 | Bronze |
| STS DEFENCE LIMITED | 03193298 | 11/10/2004 | 01/04/2012 | Gold |
| STS INTELLIMON LIMITED | 04834424 | 06/07/2004 | 01/04/2012 | Amber |
| STS SWITCHGEAR LTD | 03193301 | 11/10/2004 | 01/04/2012 | Dissolved |
| STSML REALISATIONS LTD | 03100755 | 11/10/2004 | 01/04/2012 | Dissolved |
| TELEGARTNER UK LTD | 04166282 | 27/07/2007 | 31/08/2011 | Silver |