| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Plessey Airports Ltd | 01356838 | 11/01/1991 | Dissolved |
| Plessey International Limited | 01356837 | 05/02/1992 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AEROSYSTEMS INTERNATIONAL LIMITED | 01001553 | 29/03/1999 | 06/02/2002 | Dissolved |
| BAE SYSTEMS (DEFENCE SYSTEMS) LIMITED | 00236538 | 10/07/1991 | 01/05/2000 | Silver |
| BAE SYSTEMS (FARNBOROUGH 5) LIMITED | 01104681 | 30/07/2004 | 04/01/2005 | Dissolved |
| BAE SYSTEMS (LAND AND SEA SYSTEMS) LIMITED | 02536912 | 24/04/1998 | 01/05/2000 | Bronze |
| BAE SYSTEMS DEPLOYED SYSTEMS LIMITED | 03146958 | 15/09/2000 | 28/01/2002 | Not Trading |
| BAE SYSTEMS GLOBAL COMBAT SYSTEMS MUNITIONS LIMITED | 01842252 | 30/07/2004 | 04/01/2005 | Bronze |
| Bae Systems (Farnborough 4) Ltd | 00318151 | 01/05/1992 | 15/04/1998 | Dissolved |
| INTERNATIONAL MILITARY SALES LIMITED | 02536529 | 30/07/2004 | 04/01/2005 | Bronze |
| RO DEFENCE PROJECTS LIMITED | 03529916 | 30/07/2004 | 04/01/2005 | Dissolved |
| ROYAL ORDNANCE (WEAPONS & MUNITIONS) LIMITED | 03495725 | 30/07/2004 | 04/01/2005 | Dissolved |
| ROYAL ORDNANCE SUMMERFIELD LIMITED | 02197292 | 30/07/2004 | 04/01/2005 | Dissolved |
| SIKA INTERNATIONAL LIMITED | 03317777 | 15/07/1999 | 02/03/2000 | Dissolved |
| Siemens Plessey Pacific Holdings Ltd | 01155316 | 10/07/1991 | 15/04/1998 | Dissolved |
| Siemens Shared Services Ltd | 02452851 | 01/10/1994 | 15/04/1998 | Dissolved |
| Siemens Shelfco (1) Ltd | 00483450 | 25/07/1997 | 15/04/1998 | Dissolved |
| TUV SUD SERVICES (UK) LIMITED | 00560225 | 03/01/1992 | 01/05/1998 | Silver |