| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| ALLEGION (UK) LIMITED | 00029131 | 19/12/2003 | Silver |
| ALLEGION INVESTMENTS (UK) LIMITED | 06582550 | 30/11/2013 | Bronze |
| CISA (UK) LIMITED | 02619673 | 31/12/2006 | Dissolved |
| D.A. THOMAS (NORTHERN) LIMITED | 00202667 | 12/03/2004 | Dissolved |
| INTERFLEX TIME & ACCESS LIMITED | 02760816 | 31/12/2006 | Dissolved |
| IR SECURITY AND SAFETY (SOUTH EAST) LIMITED | 01351216 | 12/03/2004 | Dissolved |
| IR SECURITY AND SAFETY (TAYFORTH) LIMITED | SC066959 | 12/03/2004 | Dissolved |
| IR SECURITY AND SAFETY ARCHITECTURAL HARDWARE LIMITED | 02027331 | 12/03/2004 | Dissolved |
| IR SECURITY AND SAFETY THOMSON GROUP LIMITED | 00967439 | 12/03/2004 | Strike Off |
| Interflex Data Systems Ltd | 01722612 | 06/06/2007 | Dissolved |
| NEWMAN TONKS (AMERSHAM) LIMITED | 00918478 | 12/03/2004 | Dissolved |
| NEWMAN-TONKS (OVERSEAS HOLDINGS) LIMITED | 00855332 | 12/03/2004 | Not Trading |
| NEWMAN-TONKS MANAGEMENT SERVICES LIMITED | 00323964 | 12/03/2004 | Dissolved |
| NT GROUP PROPERTIES LIMITED | 01996711 | 12/03/2004 | Not Trading |
| NT LEAMINGTON LIMITED | 01262027 | 16/01/2004 | Not Trading |
| NT LEGGE LIMITED | 00144343 | 12/03/2004 | Dissolved |
| NT SITTINGBOURNE LIMITED | 01041771 | 12/03/2004 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| SIMONSVOSS TECHNOLOGIES LIMITED | 05193010 | 31/12/2015 | 30/08/2023 | Gold |