| Company | Timeline | Status | |
| Borde Hill Garden Limited Director • Horticulturist | 23 Mar 2006←7 Months→30 Oct 2006 | Active | |
| The Batsford Foundation Director • Retired | 4 Feb 2002←9 Years→28 Sep 2011 | Active | |
| Howick Trustees Limited Director • Retired Horticulturalist | 19 Aug 1999←22 Years→13 Sep 2021 | Active | |
| Borde Hill Garden Limited Director • Horticulturist | 1 Sep 1991←14 Years→23 Mar 2006 | Active | |
