| Company | Timeline | Status | |
| Ace Systems Development Limited Director • Director | 21 Mar 2018←3 Years→12 Oct 2021 | Dissolved | |
| Tunnel Sensors Limited Director • Director | 4 Jul 2005←14 Years→3 Sep 2019 | Active | |
| Tunnel Sensors Limited Secretary • Unreported | 4 Jul 2005←14 Years→3 Sep 2019 | Active | |
| Dynoptic Systems Limited Secretary • Unreported | 8 Sep 1993←26 Years→3 Sep 2019 | Active | |
| Dynoptic Systems Limited Director • Computer Engineer | 31 Oct 1991←27 Years→3 Sep 2019 | Active | |
