| Company | Timeline | Status | |
| Tapchanger Holdings Limited Director • Director | 21 Nov 2016←9 Years→Current | Active | |
| Tapchanger Services Limited Director • Consultant Engineer | 6 Apr 1998←27 Years→Current | Active | |
| Tapchanger Services Limited Secretary • Consultant Engineer | 31 Mar 1995←13 Years→23 Sep 2008 | Active | |
