| Company | Timeline | Status | |
| Chapman Capacitors Limited Secretary • Physicist | 14 Jun 2004←11 Years→17 Mar 2016 | Dissolved | |
| Tedc Limited Director • Company Director | 18 Mar 2002←14 Years→17 Mar 2016 | Dissolved | |
| Gilkes (Screen Process Printers) Limited Director • Physicist | 6 Dec 1991←24 Years→17 Mar 2016 | Active | |
| Chapman Capacitors Limited Director • Physicist | 28 Jun 1991←24 Years→17 Mar 2016 | Dissolved | |
