| Company | Timeline | Status | |
| Dingell Limited Director • Civil Engineer | 30 Sep 1991←19 Years→26 Nov 2010 | Dissolved | |
| Dingell Limited Secretary • Civil Engineer | 30 Sep 1991←19 Years→26 Nov 2010 | Dissolved | |
| Autair Management Services Limited Director • Unreported | 1 Jan 1970←55 Years→Current | Active | |
