| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| CHUBB (NI) LIMITED | NF003761 | 22/09/2004 | Bronze |
| MAYBIRD CLASSIC SAILING LTD | 07170158 | 25/02/2010 | Dissolved |
| Westminster Securities Ltd | 00945189 | 05/05/2004 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| A S A (Security) Ltd | SC098734 | 23/12/1998 | 28/02/2001 | Dissolved |
| Allied Safety Co Ltd | 02145289 | 01/12/2003 | 21/10/2004 | Dissolved |
| BRITISH SECURITY INDUSTRY ASSOCIATION LIMITED(THE) | 00896431 | 14/07/2010 | 01/12/2011 | Silver |
| Blue Circle (Intruder Protection) Ltd | 00934980 | 01/12/2003 | 10/01/2005 | Dissolved |
| Bowman,L,& Sons Ltd | 02668781 | 01/12/2003 | 21/10/2004 | Dissolved |
| CARRIER FIRE & SECURITY UK LIMITED | SC069196 | 31/03/2007 | 08/05/2008 | Gold |
| CHUBB (NI) LIMITED | 00373935 | 01/12/2003 | 13/01/2009 | One Red Flag |
| CHUBB FIRE & SECURITY LIMITED | 00524469 | 22/08/1992 | 28/02/2001 | Bronze |
| CHUBB FIRE LIMITED | 00134210 | 01/12/2003 | 01/04/2006 | Silver |
| CHUBB GROUP SECURITY LIMITED | 02985115 | 21/11/2007 | 13/01/2009 | Silver |
| CHUBB MANAGEMENT SERVICES LIMITED | 01929512 | 05/05/2004 | 13/01/2009 | Dissolved |
| CHUBB SECURITY (PENSIONS) LIMITED | 00875040 | 25/08/2006 | 16/12/2009 | Not Trading |
| Central Stations Facilities Ltd | 02633024 | 14/08/1998 | 28/02/2001 | Dissolved |
| Check Monitoring Services Ltd | 02354826 | 30/01/1998 | 21/12/1998 | Dissolved |
| Chubb Alarms Group Ltd | 00303530 | 22/08/1992 | 17/09/1997 | Dissolved |
| Chubb Home Protection Ltd | 00968608 | 22/08/1992 | 17/09/1997 | Dissolved |
| Chubb Security Network Ltd | 04062277 | 01/12/2003 | 22/09/2005 | Dissolved |
| Chubb Vision Ltd | 00836735 | 22/08/1992 | 17/09/1997 | Dissolved |
| Firm Security Ltd | 02247704 | 11/06/2001 | 30/12/2001 | Dissolved |
| GENESIS MANPOWER SERVICES LIMITED | 02910272 | 17/07/1998 | 21/12/1998 | Dissolved |
| Ganyard Security Systems Ltd | 01305929 | 18/09/1998 | 17/12/1999 | Dissolved |
| Grampian Fire Protection Ltd | SC101449 | 01/12/2003 | 21/10/2004 | Dissolved |
| I S G (Guarding) Ltd | 02356311 | 30/01/1998 | 17/12/1999 | Dissolved |
| INSIGHT CERTIFICATION LIMITED | 02525516 | 25/09/1998 | 28/12/2000 | Bronze |
| Interfire Ltd | 03053886 | 01/12/2003 | 07/10/2004 | Dissolved |
| Intruder Alarms (Northern) Ltd | 02149974 | 14/01/1999 | 28/02/2001 | Dissolved |
| Jigsaw Security Ltd | 02465769 | 30/01/1998 | 21/12/1998 | Dissolved |
| John Sheffield (Fire Protection) Ltd | 01716990 | 01/12/2003 | 21/10/2004 | Dissolved |
| K S Conquest Security Ltd | 01632597 | 17/07/1998 | 28/02/2001 | Dissolved |
| Levanroy Ltd | 01377206 | 12/08/1998 | 17/12/1999 | Dissolved |
| M S S Security Ltd | SC079799 | 23/12/1998 | 28/02/2001 | Dissolved |
| MENTOR BUSINESS SYSTEMS LIMITED | 01892391 | 01/12/2003 | 13/01/2009 | Gold |
| Management Security Services (Anglia) Ltd | 01606020 | 01/12/2003 | 08/12/2004 | Dissolved |
| Rely-A-Bell Alarms Ltd | 00173780 | 22/08/1992 | 17/09/1997 | Dissolved |
| S W Motors Ltd | 02131674 | 12/10/1992 | 02/06/1994 | Dissolved |
| SECURITAS SECURITY PERSONNEL LIMITED | 01062876 | 22/08/1992 | 13/01/2009 | Dissolved |
| SECURITY MONITORING CENTRES LIMITED | 00318215 | 01/12/2003 | 13/01/2009 | Gold |
| SISYS LIMITED | 01552983 | 21/11/2007 | 13/01/2009 | Dissolved |
| Searchmill Ltd | 02547258 | 17/07/1998 | 28/02/2001 | Dissolved |
| Sectron Systems Ltd | 02534004 | 04/07/1997 | 21/12/1998 | Dissolved |
| T G PRODUCTS LIMITED | 02774304 | 01/12/2003 | 01/04/2006 | Amber |
| WESTCOUNTRY SECURITY LIMITED | 01632092 | 01/12/2004 | 13/01/2009 | Dissolved |
| Westminster Security Group Ltd | 03162557 | 01/12/2003 | 08/12/2004 | Dissolved |
| Westminster Security Systems Ltd | 02231747 | 01/12/2003 | 02/02/2005 | Dissolved |