| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Kcc Door Hardware & Security Solutions Ltd | 03820041 | 08/06/2000 | Dissolved |
| Kcc Door Hardware & Security Solutions Ltd | 03820041 | 08/06/2000 | Dissolved |
| PUMA DISTRIBUTION LIMITED | 05196970 | 04/08/2004 | Dissolved |
| PUMA DISTRIBUTION LIMITED | 05196970 | 04/08/2004 | Dissolved |
| WHITWORTH DEVELOPMENTS LIMITED | 03548007 | 21/09/2001 | Dissolved |
| WHITWORTH DEVELOPMENTS LIMITED | 03548007 | 17/04/1998 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| AL MUHAIDIB HARDWARE INTERNATIONAL LIMITED | 03861249 | 19/10/1999 | 07/05/2001 | Dissolved |
| ALLEGION (UK) LIMITED | 00029131 | 28/03/1992 | 26/03/1998 | Silver |
| BRASSART LIMITED | 03528097 | 05/05/1998 | 12/07/2002 | Gold |
| GUILD OF ARCHITECTURAL IRONMONGERS LIMITED(THE) | 01750386 | 07/06/1991 | 04/06/2004 | Silver |
| Harris Architectural Metalwork Ltd | 00481790 | 28/03/1992 | 25/04/1996 | Dissolved |
| Hosie & Lyon(Management)ltd | SC060417 | 17/03/1989 | 25/04/1996 | Dissolved |
| IR SECURITY AND SAFETY ARCHITECTURAL HARDWARE LIMITED | 02027331 | 28/03/1992 | 25/04/1996 | Dissolved |
| IR SECURITY AND SAFETY THOMSON GROUP LIMITED | 00967439 | 28/03/1992 | 25/04/1996 | Not Trading |
| Ir Security & Safety (Anglia) Ltd | 01689704 | 28/03/1992 | 31/12/1994 | Dissolved |
| Ir Security & Safety (Eastern) Ltd | 01495698 | 28/03/1992 | 31/12/1994 | Dissolved |
| Ir Security & Safety (South) Ltd | 01173239 | 28/03/1992 | 31/12/1994 | Dissolved |
| LOCKING & SECURITY SOLUTIONS LIMITED | 04149882 | 17/06/2002 | 22/09/2022 | Bronze |
| LOCKING & SECURITY SOLUTIONS LIMITED | 04149882 | 15/03/2002 | 21/05/2023 | Bronze |
| Laidlaw & Thomson (London) Ltd | 02141141 | 28/03/1992 | 25/04/1996 | Dissolved |
| Laidlaw & Thomson (Midlands) Ltd | 00533236 | 28/03/1992 | 25/04/1996 | Dissolved |
| Laidlaw,N T,(North East) Ltd | 01009908 | 28/03/1992 | 31/12/1994 | Dissolved |
| N T Laidlaw (Scotland) Ltd | SC054128 | 17/03/1989 | 29/01/1992 | Dissolved |
| N T Locking Systems Ltd | 02313798 | 28/03/1992 | 25/04/1996 | Dissolved |
| Newman Tonks (Gateshead) Ltd | 01920584 | 28/03/1992 | 05/05/1992 | Dissolved |
| Newman Tonks (Kings Norton) Ltd | 00749415 | 28/03/1992 | 04/12/1992 | Dissolved |
| Newman Tonks (Woodford Green) Ltd | 00400260 | 28/03/1992 | 07/10/1994 | Dissolved |
| Nt Laidlaw (Cymru) Ltd | 01199766 | 28/03/1992 | 31/12/1994 | Dissolved |
| Nt Laidlaw (North West) Ltd | 00167414 | 28/03/1992 | 31/12/1994 | Dissolved |
| Nt Projects Ltd | 02015331 | 28/03/1992 | 25/04/1996 | Dissolved |
| Nt Railing Systems Ltd | 01901554 | 15/01/1993 | 12/01/1996 | Dissolved |
| Roberts,Alfred G,Ltd | 00931745 | 28/03/1992 | 25/04/1996 | Dissolved |
| The Southwark Bridge Leasehold Property Co Ltd | 00427866 | 28/03/1992 | 27/11/1998 | Dissolved |
| Thomas,D A,(Doors) Ltd | 02160471 | 28/03/1992 | 25/04/1996 | Dissolved |