| Company | Timeline | Status | |
| Crop Evaluation Limited Director • Science Consultant | 6 Oct 2000←9 Years→31 Dec 2009 | Dissolved | |
| Rothamsted Research Holdings Limited Director • Research Director | 1 Jul 1998←2 Years 9 Months→29 Mar 2001 | Active | |
| The Microbio Group Limited Director • Research Dir | 10 Dec 1996←3 Years→7 Sep 2000 | Active | |
| Basf Agricultural Specialities Limited Director • Research Director | 1 Dec 1996←3 Years→7 Sep 2000 | Active | |
| The Arable Group Limited Director • Institute Director | 11 Dec 1995←1 Year 11 Months→10 Nov 1997 | Active | |
| British Crop Production Council Director • Research Director | 8 Dec 1993←5 Years→18 Feb 1999 | Dissolved | |
