| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Officer | POWER-ZERO LIMITED | 🇬🇧Regno Unito | Active | 19/04/2026 – 31/12/2018 |
| Officer | ADAMSON UDH LIMITED | — | Dissolved | 23/04/2026 – present |
| Officer | SWITCH2 UDH LIMITED | — | Dissolved | 23/04/2026 – present |
| Officer | YLEM UDH LIMITED | — | Dissolved | 23/04/2026 – present |
| Officer | ADAMSON DEL 5 LIMITED | 🇬🇧Regno Unito | Dissolved | 25/04/2026 – 25/10/2016 |
| Officer | ADAMSON DEL 6 LIMITED | 🇬🇧Regno Unito | Dissolved | 27/04/2026 – 21/12/2016 |
| Officer | W2E CONTRACTS (NO. 1) LIMITED | 🇬🇧Regno Unito | Dissolved | 27/04/2026 – present |
| Officer | NATURAL POWER INTERNATIONAL LIMITED | 🇬🇧Regno Unito | Dissolved | 06/05/2026 – 14/06/2017 |
| Officer | W2E INVESTMENTS LIMITED | — | Dissolved | 15/05/2026 – present |
| Officer | KNOWSLEY ENERGY RECOVERY LIMITED | 🇬🇧Regno Unito | Active | 30/05/2026 – 11/03/2022 |
| Officer | BIOGAS TECHNOLOGY CARBON LIMITED | 🇬🇧Regno Unito | Dissolved | 02/06/2026 – present |
| Officer | VIRIDIS ENERGY (NORGEN) LIMITED | 🇬🇧Regno Unito | Active | 12/01/2026 – 06/04/2006 |
11/03/2022
resigned
31/12/2018
resigned
24/02/1998
appointed