| Company | Timeline | Status | |
| J&K Harris Properties Ltd Director • Director | 23 Oct 2025←2 Months→Current | Active | |
| Bequest Properties Limited Director • Director | 29 Jan 2019←6 Years→Current | Active | |
| East, Harris & Burton Properties Limited Director • Unreported | 10 Jul 2017←8 Years→Current | Active | |
| Pro-Cal Powertrain Development Ltd Director • Calibration Engineering Research | 2 Jul 2012←6 Years→19 Sep 2018 | Dissolved | |
James K Harris Limited Director • Calibration Engineer | 4 Jan 2007←13 Years→7 Jan 2020 | Dissolved | |
