| Company | Timeline | Status | |
| Evolution Engineers Ltd Director • Chartered Engineer | 6 Dec 2012←12 Years→Current | Active | |
| Preston Hedges Trust Director • Chartered Civil & Structural Engineer | 1 Dec 2012←12 Years→Current | Active | |
| RDT Design Limited Director • Structural Engineer | 22 Dec 2005←7 Years→31 Dec 2012 | Active | |
| RDT Architects Limited Director • Structural Engineer | 1 Sep 2005←7 Years→31 Dec 2012 | Active | |
