| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| HIVES SAVE LIVES - AFRICA | 04885952 | 04/01/2012 | Silver |
| Plessey Airports Ltd | 01356838 | 11/01/1991 | Dissolved |
| Plessey International Limited | 01356837 | 05/02/1992 | Dissolved |
| VENTEC GLOBAL LIMITED | 03922453 | 09/02/2000 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| BAE SYSTEMS (DEFENCE SYSTEMS) LIMITED | 00236538 | 10/07/1991 | 04/10/1993 | Silver |
| BAE SYSTEMS PROJECTS (OVERSEAS) LIMITED | 00176441 | 16/03/1994 | 08/03/1996 | Dissolved |
| Bae Systems (Farnborough 4) Ltd | 00318151 | 01/05/1992 | 04/10/1993 | Dissolved |
| GKN DEFENCE HOLDINGS LIMITED | 00347258 | 11/03/1996 | 31/12/1996 | Not Trading |
| GKN TRADING LIMITED | 00059234 | 11/03/1996 | 31/12/1996 | Not Trading |
| Http Medical Ltd | 03884525 | 02/04/2001 | 16/11/2001 | Dissolved |
| ICC PROPERTIES LIMITED | 03820256 | 21/01/2002 | 30/09/2003 | Dissolved |
| MEDICSIGHT LIMITED | 04268510 | 06/04/2007 | 30/09/2011 | Dissolved |
| ROKE MANOR RESEARCH LIMITED | 00267550 | 10/07/1991 | 04/10/1993 | Silver |
| SANKEY HOLDING LIMITED | 00074901 | 09/08/1996 | 31/12/1996 | One Red Flag |
| SOCIETY OF BRITISH AEROSPACE COMPANIES (THE) | 00143447 | 13/07/1992 | 30/10/1993 | Dissolved |
| Siemens Plessey Pacific Holdings Ltd | 01155316 | 10/07/1991 | 04/10/1993 | Dissolved |
| Siemens Shelfco (1) Ltd | 00483450 | 05/02/1991 | 04/10/1993 | Dissolved |
| TUV SUD SERVICES (UK) LIMITED | 00560225 | 01/06/1993 | 04/10/1993 | Silver |
| Thales Underwater Systems U K Ltd | 02466944 | 23/05/1995 | 08/03/1996 | Dissolved |
| UKAMS LIMITED | 01801574 | 16/05/1995 | 08/03/1996 | Amber |