| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Officer | CARRUTHERS BROTHERS OILS & ADDITIVES LTD | 🇬🇧Regno Unito | Active | 16/03/2026 – present |
| Officer | DEEPSTREAM TECHNOLOGIES LIMITED | 🇬🇧Regno Unito | Active | 23/03/2026 – 15/04/2019 |
| Officer | ROSENBERG PROCESS TECHNOLOGY LTD | 🇬🇧Regno Unito | Active | 29/04/2026 – present |
| Officer | PROXION SHALE REFINING UK LTD | — | Dissolved | 14/05/2026 – present |
| Officer | PROXION PROCESS LTD | 🇬🇧Regno Unito | Dissolved | 14/05/2026 – 09/09/2014 |
| Officer | PROXION ENERGY GROUP LTD | 🇬🇧Regno Unito | Dissolved | 16/05/2026 – present |
26/06/2025
appointed
15/04/2019
resigned
25/03/2013
appointed