| Company | Timeline | Status | |
| Penultimate Power UK Limited Director • Principal Consultant | 13 Feb 2013←12 Years→Current | Active | |
| Penultimate Power UK Limited Director • Principal Consultant | 13 Feb 2013←12 Years→20 Aug 2025 | Active | |
| Offshore Renewable Energy Catapult Director • Energy Consultant | 7 Feb 2003←2 Years 7 Months→30 Sep 2005 | Active | |
| Tnei Services Limited Director • Energy Consultant | 10 Oct 2002←1 Year 4 Months→27 Feb 2004 | Active | |
| Tnei Services Limited Director • Energy Consultant | 10 Dec 1999←8 Months→1 Sep 2000 | Active | |
| International Centre For Life Trust Director • Professor | 25 Nov 1996←12 Years→30 Mar 2009 | Active | |
