| Company | Timeline | Status | |
| The Dulverton Trust Director • Art Historian | 27 Mar 2012←10 Years→29 Jul 2022 | Active | |
| Martin Wills Wildlife Maintenance Trust Director • Director | 25 Oct 2010←11 Years→29 Jul 2022 | Active | |
| M.D. Hamilton (Farms) Limited Director • Art Historian | 30 Nov 2009←12 Years→29 Jul 2022 | Active | |
| The H D H Wills 1965 Charitable Trust Director • Art Historian/freelance Writer | 11 Dec 2006←15 Years→29 Jul 2022 | Active | |
| The Batsford Foundation Director • Art Historian | 4 Feb 2002←3 Years→22 Aug 2005 | Active | |
| Ditchley Foundation(The) Director • Freelance Writer | 26 May 1993←29 Years→29 Jul 2022 | Active | |
| Farmington Trust Limited(The) Director • Director | 29 Oct 1991←30 Years→1 Oct 2022 | Active | |
