| Company | Timeline | Status | |
| Surplus Test Equipment Limited Director • Electronics Engineer | 21 Jun 2001←20 Years→1 Oct 2021 | Active | |
| Transense Technologies Plc Director • Electronics Engineer | 17 Aug 1993←12 Years→17 Nov 2005 | Active | |
| Sensor Technology Limited Director • Electronics Engineer | 31 Dec 1991←29 Years→1 Oct 2021 | Active | |
