| Company | Timeline | Status | |
| Green Routes Stirling Director • Retired | 5 Oct 2019←6 Years→Current | Active | |
| The Association For Project Safety Limited Director • Chartered Engineer | 1 Oct 2008←4 Years→1 Oct 2012 | Active | |
| Kirk And Marsh Limited Director • Chartered Engineer | 18 Apr 2003←13 Years→21 Jan 2017 | Active | |
| Woolgar Hunter Projects Limited Director • Civil Engineer | 1 Aug 1997←3 Years→30 Aug 2000 | Active | |
