| Company | Timeline | Status | |
| Key Radio Systems Limited Director • Project Manager | 28 Jul 2015←6 Years→24 Aug 2021 | Dissolved | |
| Radio Systems Limited Director • Project Manager | 9 Jul 2015←10 Years→Current | Active | |
| Key Radio Limited Director • Engineer | 3 Sep 2008←12 Years→24 Aug 2021 | Dissolved | |
