| Company | Timeline | Status | |
| Mason Clark Group Limited Director • Director Structural Engineer | 3 Aug 2017←8 Years→Current | Active | |
| Dossormca, Consulting Engineers And Surveyors Limited Director • Technical Director | 1 Oct 2015←10 Years→Current | Active | |
| Mason Clark Holdings Limited Director • Technical Director | 1 Oct 2015←10 Years→Current | Active | |
| Mason Clark Associates Limited Director • Director Structural Engineer | 1 Oct 2015←10 Years→Current | Active | |
| Howsham Power Co Ltd Director • Engineerer | 23 Sep 2009←6 Years→14 Oct 2015 | Active | |
