| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| APT (2) LIMITED | 02766991 | 11/12/1992 | Dissolved |
| Apt Systems Uk Ltd | 05737427 | 09/03/2006 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| APT-SKIDATA LIMITED | 03597962 | 05/08/1998 | 10/12/2008 | One Red Flag |
| Apt Controls Group Ltd | 05729797 | 03/03/2006 | 09/03/2006 | Dissolved |
| BRITISH PARKING ASSOCIATION(THE) | 00979689 | 05/04/1992 | 17/12/2003 | One Red Flag |
| Expamet (2) Ltd | 00709951 | 27/07/1992 | 16/12/1992 | Dissolved |
| Expamet (3) Ltd | 01473429 | 17/09/1992 | 16/12/1992 | Dissolved |
| LONDON GLIDING CLUB PROPRIETARY LIMITED | 00255864 | 04/06/2010 | 30/11/2021 | Silver |
| LONDON SAILPLANES LIMITED | 00340611 | 04/06/2010 | 30/11/2021 | One Red Flag |
| SIGNPOST SOLUTIONS HOLDINGS LIMITED | 04594308 | 01/04/2008 | 07/05/2014 | Dissolved |
| SIGNPOST SOLUTIONS LIMITED | 01084535 | 01/04/2008 | 07/05/2014 | Silver |
| SWARCO UK LIMITED | 02754698 | 12/11/1992 | 07/05/2014 | One Red Flag |