| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Officer | DECARBONISE FUEL LIMITED | 🇬🇧Regno Unito | Active | 07/04/2026 – present |
| Officer | GAS VEHICLE ALLIANCE LIMITED | — | Dissolved | 23/05/2026 – 31/12/2019 |
| Officer | GAS ALLIANCE SOLUTIONS HOLDINGS LIMITED | — | Dissolved | 23/05/2026 – 31/12/2019 |
| Officer | ENSYSCO LIMITED | 🇬🇧Regno Unito | Dissolved | 23/04/2026 – present |
| Officer | WICKS FARM (BIOGAS) LTD | 🇬🇧Regno Unito | Dissolved | 04/05/2026 – 20/06/2015 |
| Officer | BIOMETHANE (CASTLE EATON) LIMITED | 🇬🇧Regno Unito | Active | 05/05/2026 – 17/01/2017 |
12/05/2020
appointed
31/12/2019
resigned
26/03/2015
appointed