| Company | Timeline | Status | |
| Exeter Mathematics School Director • Retired | 9 Jan 2024←1 Year 9 Months→Current | Active | |
| Ways With Words Limited Director • Retired | 1 Feb 2019←4 Years→8 Aug 2023 | Dissolved | |
| Exeter Mathematics School Director • Retired | 28 Aug 2014←8 Years→26 Aug 2022 | Active | |
