| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Officer | TEESSIDE BIO FUELS LIMITED | 🇬🇧Regno Unito | Dissolved | 25/03/2026 – 01/12/2016 |
| Officer | NORTH LANARKSHIRE BIO POWER LIMITED | 🇬🇧Regno Unito | Active | 07/01/2026 – 01/12/2016 |
| Officer | AVONMOUTH BIO POWER CONTRACTING LIMITED | 🇬🇧Regno Unito | Dissolved | 30/05/2026 – 29/03/2018 |
| Officer | AVONMOUTH BIO POWER PROPERTY LIMITED | 🇬🇧Regno Unito | Dissolved | 23/05/2026 – 29/03/2018 |
| Officer | AVONMOUTH BIO POWER ENERGY LIMITED | 🇬🇧Regno Unito | Dissolved | 20/05/2026 – 29/03/2018 |
| Officer | AVONMOUTH BIO POWER (OPERATIONS) LIMITED | 🇬🇧Regno Unito | Dissolved | 03/05/2026 – 29/03/2018 |
| Officer | AVONMOUTH BIO POWER LIMITED | 🇬🇧Regno Unito | Dissolved | 04/05/2026 – 29/03/2018 |
| Officer | BIOGEN PROJECTS LIMITED | 🇬🇧Regno Unito | Dissolved | 02/05/2026 – 01/12/2016 |
| Officer | AVON BIO POWER LIMITED | 🇬🇧Regno Unito | Dissolved | 03/05/2026 – 03/05/2017 |
| Officer | SEVERN BIO POWER LIMITED | 🇬🇧Regno Unito | Dissolved | 03/05/2026 – 03/05/2017 |
| Officer | KAZ RESERO POWER (UK) LIMITED | 🇬🇧Regno Unito | Dissolved | 05/05/2026 – 01/12/2016 |
| Officer | EASTHAM BIO POWER LIMITED | 🇬🇧Regno Unito | Dissolved | 25/03/2026 – 03/05/2017 |
| Officer | STANLOW BIO POWER LIMITED | 🇬🇧Regno Unito | Active | 05/05/2026 – 10/09/2019 |
| Officer | DARTMOOR OPERATIONS LIMITED | 🇬🇧Regno Unito | Dissolved | 05/05/2026 – 08/11/2017 |
| Officer | DARTMOOR BIO POWER LIMITED | — | Dissolved | 05/05/2026 – 08/11/2017 |
| Officer | HOOTON BIO POWER LIMITED | 🇬🇧Regno Unito | Active | 07/05/2026 – 03/05/2017 |
| Officer | PEBBLEHALL BIO POWER LIMITED | 🇬🇧Regno Unito | Active | 16/02/2026 – 12/04/2021 |
| Officer | CG REALISATIONS 2023 LIMITED | — | Liquidation | 30/12/2025 – 11/03/2021 |
| Officer | CARBONARIUS3 LIMITED | — | Dissolved | 13/05/2026 – present |
| Officer | TYSELEY BIO POWER LIMITED | — | Dissolved | 14/05/2026 – 21/03/2022 |
| Officer | WELLAND BIO POWER LIMITED | 🇬🇧Regno Unito | Active | 17/02/2026 – 12/04/2021 |
| Officer | CARBONARIUS2 LIMITED | 🇬🇧Regno Unito | Dissolved | 18/05/2026 – 15/04/2024 |
| Officer | ALMONDBANK POWER LIMITED | — | Dissolved | 19/05/2026 – present |
| Officer | BIRMINGHAM BIO POWER LIMITED | 🇬🇧Regno Unito | Active | 18/05/2026 – 19/03/2021 |
| Officer | O-GEN UK LIMITED | 🇬🇧Regno Unito | Active | 02/06/2026 – 30/11/2020 |
| Officer | O-GEN DEVTREK LIMITED | 🇬🇧Regno Unito | Dissolved | 03/06/2026 – present |
| Officer | O-GEN EXTREK LIMITED | 🇬🇧Regno Unito | Dissolved | 03/06/2026 – present |
| Officer | O-GEN PLYMTREK LIMITED | — | Dissolved | 03/06/2026 – 02/06/2015 |
| Officer | O-GEN UNA GROUP LIMITED | 🇬🇧Regno Unito | Dissolved | 04/06/2026 – present |
| Officer | O-GEN BCTREK LIMITED | 🇬🇧Regno Unito | Dissolved | 04/06/2026 – present |
| Officer | O-GEN ENERGY LIMITED | — | Dissolved | 05/06/2026 – present |
| Officer | OGEN LIMITED | — | Dissolved | 12/06/2026 – present |
| Officer | STOKE ENERGY LIMITED | 🇬🇧Regno Unito | Dissolved | 28/02/2026 – 04/01/2017 |
| Officer | MES ENVIRONMENTAL LIMITED | 🇬🇧Regno Unito | Liquidation | 19/03/2026 – 18/08/2000 |
15/04/2024
resigned
21/03/2022
resigned
11/12/2012
appointed