| Company | Timeline | Status | |
| James Robertson Bagpipes Limited Director • Engineer | 6 Jan 2016←8 Months→20 Sep 2016 | Dissolved | |
| Robertson's Original Seasoning Company Limited Director • Engineer | 6 Jan 2016←12 Months→3 Jan 2017 | Dissolved | |
| TB TCS Ltd Director • Consultant Engineer | 6 Mar 2006←19 Years→Current | Active | |
