| Company | Timeline | Status | |
| Amcol Engineering Ltd Secretary • Civil Engineer | 1 Apr 2007←18 Years→Current | Active | |
| Amcol Engineering Ltd Director • Civil Engineer | 31 Oct 1997←28 Years→Current | Active | |
| Grenham Construction Services Limited Director • Civil Engineer | 30 Jun 1991←30 Years→29 Jun 2021 | Dissolved | |
