| Company | Timeline | Status | |
| Trees For Life Director • Ornithologist | 12 Dec 1997←9 Years→14 Jun 2007 | Active | |
| Fair Isle Bird Observatory Trust (The) Director • Ornithologist | 11 Mar 1989←21 Years→20 Jan 2011 | Active | |
| Fair Isle Bird Observatory Trust (The) Director • Unreported | 1 Jan 1970←41 Years→20 Jan 2011 | Active | |
