| Company | Timeline | Status | |
| Browston Instruments Limited Director • Director | 17 Mar 2015←10 Years→Current | Active | |
| Aae Technologies Limited Director • Director | 6 Feb 2015←10 Years→Current | Active | |
| Applied Acoustic Engineering Limited Director • Director | 30 Jul 1991←34 Years→Current | Active | |
| Applied Acoustic Engineering Limited Secretary • Unreported | 30 Jul 1991←34 Years→Current | Active | |
