| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Officer | WEARDALE MINERALS LIMITED | 🇬🇧United Kingdom | Active | 10/03/2026 – present |
| Person with significant control | WEARDALE MINERALS LIMITED | 🇬🇧United Kingdom | Active | 07/12/2025 – present |
| Person with significant control | BOLTSBURN PROPERTY MANAGEMENT LIMITED | 🇬🇧United Kingdom | Active | 30/11/2025 – present |
| Officer | BOLTSBURN PROPERTY MANAGEMENT LIMITED | 🇬🇧United Kingdom | Active | 10/03/2026 – present |
| Officer | FLUORSPAR VENTURES LIMITED | 🇬🇧United Kingdom | Active | 15/12/2025 – present |
| Person with significant control | FLUORSPAR VENTURES LIMITED | 🇬🇧United Kingdom | Active | 22/06/2024 – 30/03/2026 |
| Officer | MINERAL HERITAGE LIMITED | 🇬🇧United Kingdom | Active | 11/04/2026 – present |
| Person with significant control | UK MINING VENTURES LIMITED | 🇬🇧United Kingdom | Active | 26/06/2024 – 27/04/2020 |
| Officer | UK MINING VENTURES LIMITED | 🇬🇧United Kingdom | Active | 10/04/2026 – present |
| Officer | MINERAL BASES LIMITED | 🇬🇧United Kingdom | Active | 01/04/2026 – present |
| Officer | CRYSTAL CLASSICS AUCTIONS LIMITED | 🇬🇧United Kingdom | Active | 01/04/2026 – present |
| Person with significant control | HAMMERSTEIN AUCTIONS LTD | 🇬🇧United Kingdom | Active | 22/06/2024 – present |
| Person with significant control | CRYSTAL CLASSICS FINE MINERALS LIMITED | 🇬🇧United Kingdom | Active | 26/06/2024 – present |
| Officer | HYMERFORD LTD | 🇬🇧United Kingdom | Active | 30/03/2026 – present |
| Officer | TERRACRYSTALS LIMITED | 🇬🇧United Kingdom | Active | 30/03/2026 – present |
30/03/2026
resigned
02/12/2025
appointed
26/03/2013
appointed