| Company | Timeline | Status | |
| Surplus Test Equipment Limited Director • Electronics Engineer | 21 Jun 2001←18 Years→7 Aug 2019 | Active | |
| Transense Technologies Plc Director • Electronic Engineer | 18 Aug 1992←7 Years→27 Oct 1999 | Active | |
| Sensor Technology Limited Director • Electronics Engineer | 31 Dec 1991←27 Years→7 Aug 2019 | Active | |
