| Company | Timeline | Status | |
| Gresham's School Director • Retired | 30 Jun 2006←1 Year→30 Jun 2007 | Active | |
| Horson Farms Limited Director • Retired Chartered Surveyor | 5 Nov 2001←23 Years→1 Dec 2024 | Active | |
| Eden Project Limited Director • Farmer | 4 May 1999←2 Years 1 Month→5 Jun 2001 | Active | |
| Clift Farming Company Director • Retired Chartered Surveyor | 25 Nov 1996←28 Years→1 Dec 2024 | Active | |
| West Antony Farming Company Director • Retired Chartered Surveyor | 25 Nov 1996←28 Years→1 Dec 2024 | Active | |
| The Marine Biological Association (Legacy Matters) Limited Director • Landowner/farmer | 20 Jun 1994←10 Years→20 Oct 2004 | Dissolved | |
| Theatre Royal (Plymouth) Limited Director • Farmer | 31 Jul 1992←4 Years→25 Mar 1997 | Active | |
| Cove Meadow Management Company Limited Director • Chartered Surveyor | 8 Jul 1992←5 Years→23 Apr 1998 | Active | |
| Cornwall Gardens Trust Director • Farmer | 30 Apr 1992←3 Years→2 May 1995 | Dissolved | |
| Howick Trustees Limited Director • Landowner | 18 Apr 1975←40 Years→31 Dec 2015 | Active | |
