| Company | Timeline | Status | |
| Greys Holdings Limited Director • Unreported | 23 May 2016←9 Years→Current | Active | |
| Jackmark International Limited Director • Engineer | 5 Apr 1995←26 Years→2 Nov 2021 | Active | |
| Jackmark Engineering Limited Director • Engineer | 13 Nov 1991←29 Years→2 Nov 2021 | Active | |
