| Company | Timeline | Status | |
| Openfield Marketing Limited Director • Farmer | 27 Feb 2006←2 Years 8 Months→14 Nov 2008 | Active | |
| Rothamsted Research Limited Director • Farmer | 22 Feb 2006←7 Years→24 Sep 2013 | Active | |
Rothamsted Research Association Director • Farmer | 8 Mar 1995←10 Years→24 Nov 2005 | Dissolved | |
