| Company | Timeline | Status | |
| Phytoplasmas In Vitro Ltd Director • Scientist | 5 Jan 2012←11 Years→11 Apr 2023 | Dissolved | |
| Windsors (Wallasey) Limited Director • Microbiologist | 2 Mar 2000←9 Months→28 Nov 2000 | Active | |
| Mycoplasma Experience Limited Director • Unreported | 1 Jan 1970←55 Years→Current | Active | |
