| Company | Timeline | Status | |
| Ramshorn Limited Director • Engineer | 30 Jul 1999←19 Years→15 Mar 2019 | Active | |
| Skip Units Limited Director • Engineer | 21 Sep 1995←23 Years→15 Mar 2019 | Active | |
| Waste Equipment Limited Director • Engineer | 2 Jan 1991←28 Years→15 Mar 2019 | Active | |
