| Company | Timeline | Status | |
| GRM Manufacturing Limited Director • Unreported | 25 May 2023←2 Years 5 Months→Current | Active | |
| McCallum Calorifiers Limited Director • Unreported | 25 May 2023←2 Years 5 Months→Current | Active | |
| McCallum Limited Director • Unreported | 8 Mar 2017←8 Years→Current | Active | |
