| Company | Timeline | Status | |
| York Area Quaker Meeting Of The Religious Society Of Friends (Quakers) In Britain Director • Retired Architect | 1 Jan 2025←1 Year→Current | Active | |
| Bootham School Director • Retired | 1 Jan 2023←2 Years→22 Jan 2025 | Active | |
| Wentworth Woodhouse Preservation Trust Director • Consultant | 19 May 2018←2 Years 4 Months→13 Oct 2020 | Active | |
| Dean Knight Partnership Limited Director • Architect | 11 Apr 2005←17 Years→28 Jun 2022 | Dissolved | |
| The Institute Of Historic Building Conservation Director • Architect | 12 Jun 2004←11 Months→18 May 2005 | Active | |
