| Company | Timeline | Status | |
| The British Society For The History Of Mathematics Director • Retired | 1 Jan 2025←10 Months→Current | Active | |
1FQ Ltd Director • Actuary | 27 Jan 2020←8 Months→6 Oct 2020 | Dissolved | |
| 5FD Ltd Director • Actuary | 14 Jul 2015←10 Years→Current | Active | |
