| Company | Timeline | Status | |
| SR Historic Environment Ltd Director • Consultant Garden Historian | 1 Nov 2011←14 Years→Current | Active | |
| Buckinghamshire Gardens Trust Director • Garden Historia And Writer | 10 Jul 2003←18 Years→30 Oct 2021 | Active | |
| The Gardens Trust Director • Writer & Consultant | 22 Feb 1996←5 Months→28 Jul 1996 | Active | |
