| Name | Company Number | Date Appointed | Rating |
|---|
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AGILITAS IT SOLUTIONS LIMITED | 02504382 | 22/06/1999 | 31/12/2000 | Silver |
| CAPITA SECURE INFORMATION SOLUTIONS LIMITED | 01593831 | 18/04/1996 | 26/08/1997 | Gold |
| CLIFFORD THAMES GROUP LIMITED | 08524674 | 04/07/2013 | 20/08/2014 | Dissolved |
| COMPONENTSOURCE LIMITED | 02890788 | 21/09/1999 | 18/12/2001 | Bronze |
| CRANE TELECOMMUNICATIONS GROUP LIMITED | 02493759 | 23/01/2001 | 30/04/2003 | Dissolved |
| CT MIDCO LIMITED | 02766273 | 01/04/1999 | 20/08/2014 | Dissolved |
| CT SUBCO LIMITED | 06864880 | 27/01/2010 | 20/08/2014 | Dissolved |
| EASTERN DATA GROUP LIMITED | 01565317 | 23/09/1998 | 10/12/2004 | Silver |
| ELECTRO RENT UK LIMITED | 01154019 | 03/11/1997 | 26/02/1998 | Bronze |
| G4S HOLDINGS 103 (UK) LIMITED | 03120711 | 22/03/1996 | 26/08/1997 | Dissolved |
| G4S INTERNATIONAL 105 (UK) LIMITED | 00664611 | 04/04/1994 | 26/08/1997 | Gold |
| G4S PROPERTY HOLDINGS (OXFORD) LIMITED | 02201530 | 23/06/1992 | 26/08/1997 | Dissolved |
| IDE GROUP PROTECT LIMITED | 03882936 | 01/01/2002 | 23/01/2013 | Dissolved |
| ITIM LIMITED | 03208792 | 29/06/1999 | 25/01/2002 | Amber |
| Interconnect Ltd | 01969874 | 23/05/1994 | 26/08/1997 | Dissolved |
| Ion Energy Ltd | 03936408 | 13/09/2000 | 23/04/2001 | Dissolved |
| NEWMIR LIMITED | 02062689 | 03/11/1997 | 23/06/2006 | Silver |
| O R O (U K) Ltd | 02915899 | 05/03/1999 | 01/12/2000 | Dissolved |
| O2 HOLDINGS LIMITED | 02604354 | 01/02/1995 | 26/08/1997 | Bronze |
| O2 MOBILES LIMITED | 02604355 | 01/02/1995 | 26/08/1997 | Dissolved |
| O2 NETWORKS LIMITED | 02604351 | 01/02/1995 | 26/08/1997 | Gold |
| OEC EUROPE HOLDINGS LIMITED | 00453155 | 25/06/1998 | 20/08/2014 | Dissolved |
| OEC FLEET LIMITED | 03054723 | 20/10/2004 | 27/10/2005 | Dissolved |
| Private Mobile Radio Ltd | 01098923 | 01/03/1993 | 26/08/1997 | Dissolved |
| Private Mobile Rentals Ltd | 02241196 | 01/03/1993 | 26/08/1997 | Dissolved |
| SECURICOR CELLULAR SERVICES LIMITED | 00569829 | 23/06/1992 | 26/08/1997 | Dissolved |
| SRT PMR TECHNOLOGY LIMITED | 02205771 | 23/06/1992 | 26/08/1997 | Dissolved |
| Securicor Communications Ltd | 01500752 | 03/06/1992 | 26/08/1997 | Dissolved |
| Securicor Computer Services Ltd | 00490626 | 17/07/1996 | 26/08/1997 | Dissolved |
| Securicor Datalink Ltd | 02058311 | 23/06/1992 | 26/08/1997 | Dissolved |
| Securicor Dopra Ltd | 02752256 | 18/04/1996 | 26/08/1997 | Dissolved |
| Securicor Electronics Ltd | 00731142 | 23/06/1992 | 26/08/1997 | Dissolved |
| Socom Group Ltd | 02569239 | 30/06/1993 | 26/08/1997 | Dissolved |
| TELEFONICA UK LIMITED | 01743099 | 01/02/1995 | 26/08/1997 | Gold |
| WASS PRITCHARD PACKAGING LIMITED | 02886779 | 20/10/2004 | 27/10/2005 | Dissolved |
| Westell Ltd | 01907195 | 27/08/1993 | 26/08/1997 | Dissolved |