| Company | Timeline | Status | |
| Dr. J.H. Burgoyne & Partners (International) Limited Director • Consulting Scientist | 14 Mar 2019←3 Years→18 Jan 2023 | Active | |
| Burgoyne Management Limited Director • Consulting Engineer | 12 Nov 2015←7 Years→18 Jan 2023 | Active | |
| Dr J H Burgoyne & Partners Limited Liability Partnership Non-designated LLP Member • Unreported | 2 Jul 2001←21 Years→1 Jan 2023 | Active | |
