| Company | Timeline | Status | |
| Field Studies Council Director • Retired | 2 Jul 2015←9 Years→1 Jul 2024 | Active | |
| Field Studies Council Director • Scientist | 26 Jun 2004←5 Years→5 Jun 2010 | Active | |
Green Apprentices Limited Director • University Professor | 10 Jul 1998←4 Years→18 Dec 2002 | Dissolved | |
| British Ecological Society(The) Director • Government Scientist | 12 Jan 1992←2 Years 11 Months→20 Dec 1994 | Active | |
