| Company | Timeline | Status | |
| Algorithm And Extremal Consulting Limited Director • University Professor | 28 Feb 2018←7 Years→Current | Active | |
| United Kingdom Mathematics Trust Director • Mathematician | 14 Oct 1998←3 Years→15 Nov 2001 | Active | |
| Properstead Limited Director • Professor | 15 Jan 1991←34 Years→Current | Active | |
