| Company | Timeline | Status | |
| African Oyster Trust Director • Retired | 12 Oct 2025←3 Months→Current | Active | |
| Burgoyne Management Limited Director • Consulting Engineer | 12 Nov 2015←1 Year 7 Months→30 Jun 2017 | Active | |
| Dr J H Burgoyne & Partners Limited Liability Partnership Non-designated LLP Member • Unreported | 2 Jul 2001←16 Years→30 Jun 2017 | Active | |
