| Company | Timeline | Status | |
| Civil Engineering Contractors Association (Scotland) Director • Civil Engineer | 26 Feb 2015←7 Years→24 Feb 2022 | Active | |
| SLM Mackenzie Limited Director • Unreported | 1 Oct 2009←16 Years→Current | Active | |
| Mackenzie Construction Limited Director • Unreported | 19 Jun 2008←17 Years→Current | Active | |
