| Company | Timeline | Status | |
| Trinity Hall Biogas Limited Director • Director | 7 Feb 2012←3 Years→30 Jun 2015 | Active | |
| Greentec Energy Limited Director • Director | 25 Jul 2011←3 Years→30 Jun 2015 | Active | |
| Lewis Silkin LLP Non-designated LLP Member • Unreported | 1 Apr 2007←3 Years→22 Jul 2010 | Active | |
