| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| CENTURY LOCKS LIMITED | 02154075 | 18/07/2005 | Dissolved |
| CHUBB LOCKS LIMITED | 01387734 | 18/07/2005 | Dissolved |
| CHUBB LOCKS UK LIMITED | 00916461 | 18/07/2005 | Dissolved |
| CLAVERHAM LIMITED | 03384710 | 11/02/2022 | Gold |
| CROMPTON HOLDINGS LIMITED | 04079172 | 26/09/2019 | Not Trading |
| CROMPTON TECHNOLOGY GROUP LIMITED | 00964143 | 26/06/2024 | Silver |
| CT GROUP LIMITED | 05893915 | 26/09/2019 | Not Trading |
| Covebay Trading Ltd | NI065952 | 30/11/2007 | Dissolved |
| EDWIN SHOWELL & SONS LIMITED | 00075394 | 13/06/2005 | Dissolved |
| GOODRICH (GREAT BRITAIN) LIMITED. | 03116373 | 23/12/2021 | Gold |
| GOODRICH ACTUATION SYSTEMS LIMITED | 04482320 | 26/09/2019 | Silver |
| HAMILTON SUNDSTRAND UK HOLDINGS LIMITED | 04108931 | 14/01/2022 | Bronze |
| INGERSOLL LOCKS LIMITED | 00359973 | 18/07/2005 | Dissolved |
| LASER KEY LIMITED | 04905728 | 25/05/2006 | Dissolved |
| LASER KEY LIMITED | 04905728 | 22/10/2012 | Dissolved |
| SAFEGUARD DOORS LIMITED | 04230789 | 25/03/2008 | Dissolved |
| Timelox Ltd | 02656958 | 22/11/2005 | Dissolved |
| UNION LOCKS LIMITED | 00107633 | 13/06/2005 | Dissolved |
| W.J.GOODWIN & SON,LIMITED | 00401988 | 18/07/2005 | Dissolved |
| YALE LOCKS LIMITED | 01767232 | 18/07/2005 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| ABLOY SECURITY LIMITED | 02078532 | 27/05/2005 | 31/03/2013 | Dissolved |
| ADAMS RITE EUROPE LIMITED | 01217948 | 02/02/2007 | 31/03/2013 | Dissolved |
| ASSA ABLOY (UK) PENSION TRUSTEES LIMITED | 04007863 | 26/04/2005 | 31/03/2013 | Not Trading |
| ASSA ABLOY (UK) PENSION TRUSTEES LIMITED | 04007863 | 26/04/2005 | 19/03/2013 | Not Trading |
| ASSA ABLOY LIMITED | 02096505 | 27/05/2005 | 31/03/2013 | Silver |
| ASSA ABLOY LIMITED | 02096505 | 26/03/2008 | 31/03/2013 | Silver |
| ASSA LIMITED | 02066014 | 18/07/2005 | 31/03/2013 | Dissolved |
| C. E. MARSHALL LIMITED | 00321244 | 13/06/2005 | 31/03/2013 | Insolvent |
| CHUBB LOCKS CUSTODIAL SERVICES LIMITED | 04007574 | 13/06/2005 | 31/03/2013 | Dissolved |
| CLEARPOWER LIMITED | 06247523 | 30/06/2013 | 18/12/2015 | Amber |
| DITEC ENTREMATIC UK LTD | 01368008 | 09/06/2005 | 03/06/2010 | Dissolved |
| GEESE THEATRE COMPANY LIMITED | 02182104 | 24/02/1998 | 05/01/2006 | Silver |
| GKN AUTOMOTIVE LIMITED | 00034104 | 09/09/2016 | 29/07/2019 | Silver |
| GKN DRIVELINE UK LIMITED | 10992330 | 03/10/2017 | 04/07/2019 | Amber |
| GKN EVO EDRIVE SYSTEMS LIMITED | 07664134 | 09/09/2016 | 04/07/2019 | Gold |
| GKN HYBRID POWER LIMITED | 06005208 | 16/12/2016 | 12/03/2018 | One Red Flag |
| IDENTRUST IDENTITIES LIMITED | 01526540 | 16/05/2005 | 31/03/2013 | Dissolved |
| IDENTRUST IDENTITIES LIMITED | 01526540 | 22/10/2012 | 31/03/2013 | Dissolved |
| INTEGRATED SURVIVABILITY TECHNOLOGIES LIMITED | 06805545 | 30/06/2013 | 18/12/2015 | Dissolved |
| JOSIAH PARKES & SONS LIMITED | 00704809 | 18/07/2005 | 31/03/2013 | Not Trading |
| MUL-T-LOCK (UK) LIMITED | 02571152 | 13/10/2005 | 31/03/2013 | Dissolved |
| NP AEROSPACE LIMITED | 03472480 | 30/06/2013 | 18/12/2015 | Silver |
| POWERSHIELD DOORS LTD | NI026027 | 30/11/2007 | 31/03/2013 | Dissolved |
| SECURISTYLE GROUP HOLDINGS LIMITED | 05879071 | 27/01/2012 | 31/03/2013 | Insolvent |
| SECURISTYLE LIMITED | 01381767 | 27/01/2012 | 31/03/2013 | Dissolved |
| SECURITY PRODUCTS UK LIMITED | 01403050 | 18/07/2005 | 31/03/2013 | Not Trading |
| TCG GUARDIAN 1 LIMITED | 05564034 | 30/06/2013 | 18/12/2015 | Not Trading |
| TCG GUARDIAN 2 LIMITED | 05564065 | 30/06/2013 | 18/12/2015 | Gold |
| TRAKA LIMITED | 03088893 | 06/04/2012 | 31/03/2013 | Insolvent |
| YALE DOOR AND WINDOW SOLUTIONS LIMITED | 00400718 | 18/07/2005 | 31/03/2013 | Dissolved |
| YALE DOOR AND WINDOW SOLUTIONS LIMITED | 00400718 | 22/10/2012 | 31/03/2013 | Dissolved |