| Company | Timeline | Status | |
| Trace Measurement Limited Director • Administration | 1 Feb 2007←18 Years→Current | Active | |
| Headmaster Limited Secretary • Unreported | 15 Sep 1994←3 Years→1 Sep 1998 | Dissolved | |
| Trace Measurement Limited Secretary • Unreported | 17 Jan 1992←9 Years→1 Jan 2002 | Active | |
| Trace Measurement Limited Director • Company Secretary | 17 Jan 1992←9 Years→1 Jan 2002 | Active | |
