| Company | Timeline | Status | |
| Strategic Decommissioning Consultants Ltd Director • Engineer | 17 Feb 2014←10 Years→20 Sep 2024 | Dissolved | |
| Heard Associates Ltd Director • Chartered Engineer | 26 Oct 2010←15 Years→Current | Active | |
| Evolv Energies Limited Director • Director | 3 Aug 2007←3 Years→14 Mar 2011 | Active | |
| Xodus Group Limited Director • Director | 25 Nov 2005←5 Years→14 Mar 2011 | Active | |
| Penspen Limited Director • Engineer | 1 Apr 2002←3 Years→10 Nov 2005 | Active | |
