| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Officer | PENHALLOW GEOTHERMAL LIMITED | 🇬🇧United Kingdom | Active | 03/02/2026 – present |
| Officer | MANHAY GEOTHERMAL LIMITED | 🇬🇧United Kingdom | Active | 03/02/2026 – present |
| Officer | UNITED DOWNS LITHIUM LIMITED | 🇬🇧United Kingdom | Active | 25/03/2026 – present |
| Officer | GEOGEN LIMITED | 🇬🇧United Kingdom | Active | 03/02/2026 – present |
| Officer | GEOCUBED LIMITED | 🇬🇧United Kingdom | Active | 05/04/2026 – 28/03/2022 |
| Officer | UNITED DOWNS GEOTHERMAL LIMITED | 🇬🇧United Kingdom | Active | 20/04/2026 – present |
| Officer | SKRL LIMITED | 🇬🇧United Kingdom | Dissolved | 05/05/2026 – present |
| Officer | GEON ENERGY LIMITED | 🇬🇧United Kingdom | Dissolved | 21/01/2026 – present |
| Officer | GEOTHERMAL ENGINEERING LIMITED | 🇬🇧United Kingdom | Active | 03/06/2026 – present |
| Officer | BLUES MATCH LIMITED | 🇬🇧United Kingdom | Active | 18/03/2026 – present |
01/02/2024
appointed
04/11/2022
appointed
23/02/2007
appointed