| Company | Timeline | Status | |
| Severn Estuary Tidal Bar Limited Director • Consultant | 14 Aug 2020←5 Years→Current | Active | |
| ISG Northern Limited Director • Director | 2 Jun 2014←6 Months→24 Dec 2014 | Dissolved | |
| Ssard Ltd Director • Engineer | 19 Jan 2007←17 Years→22 Oct 2024 | Dissolved | |
| Costain Limited Director • Mechanical Engineer | 25 Jun 2003←3 Years→1 Oct 2006 | Active | |
| Costain International Limited Director • Mechanical Engineer | 25 Jun 2003←3 Years→1 Oct 2006 | Dissolved | |
