| Company | Timeline | Status | |
| Instrument Research Company Limited Director • Unreported | 20 Jun 2014←11 Years→Current | Active | |
| MJD Precision Engineering Limited Secretary • Accountant | 12 Mar 2003←22 Years→Current | Active | |
| MJD Precision Engineering Limited Director • Accountant | 12 Mar 2003←19 Years→6 May 2022 | Active | |
