| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Officer | BLACKSHEEP POWER LIMITED | 🇬🇧United Kingdom | Active | 25/01/2026 – present |
| Officer | BLACKSHEEP SCIENCES LIMITED | 🇬🇧United Kingdom | Active | 25/01/2026 – present |
| Officer | ROYSTON INSTRUMENTS LTD | 🇬🇧United Kingdom | Active | 18/03/2026 – present |
| Officer | FLUIDIC SCIENCES LIMITED | 🇬🇧United Kingdom | Active | 25/01/2026 – present |
| Officer | PARTICLE WORKS LIMITED | 🇬🇧United Kingdom | Active | 27/03/2026 – 14/07/2023 |
| Officer | LOTHIAN SHELF (730) LIMITED | 🇬🇧United Kingdom | Dissolved | 25/01/2026 – present |
| Person with significant control | LOTHIAN SHELF (730) LIMITED | 🇬🇧United Kingdom | Dissolved | 26/06/2024 – present |
| Officer | LOTHIAN SHELF (729) LIMITED | 🇬🇧United Kingdom | Dissolved | 25/01/2026 – present |
| Person with significant control | LOTHIAN SHELF (729) LIMITED | 🇬🇧United Kingdom | Dissolved | 21/06/2024 – present |
| Officer | THE DOLOMITE CENTRE LIMITED | 🇬🇧United Kingdom | Active | 15/06/2026 – 14/07/2023 |
| Officer | LABGLASS LTD | 🇬🇧United Kingdom | Dissolved | 06/06/2026 – 31/12/2019 |
| Officer | SYRRIS LIMITED | 🇬🇧United Kingdom | Active | 31/05/2026 – 31/12/2019 |
31/05/2026
England → United Kingdom
08/04/2026
United Kingdom → England
27/11/2009
appointed