| Role | Company | Country | Status | Date Range |
|---|---|---|---|---|
| Person with significant control | TIL SPV 8 LIMITED | 🇬🇧Regno Unito | Active | 18/12/2025 – present |
| Officer | TIL SPV 8 LIMITED | 🇬🇧Regno Unito | Active | 18/12/2025 – present |
| Officer | TIL SPV 7 LIMITED | 🇬🇧Regno Unito | Active | 18/03/2026 – present |
| Officer | TIL SPV 6 LIMITED | 🇬🇧Regno Unito | Active | 09/01/2026 – 07/01/2026 |
| Officer | TIL SPV 5 LIMITED | 🇬🇧Regno Unito | Active | 13/03/2026 – present |
| Officer | TIL SPV 4 LIMITED | 🇬🇧Regno Unito | Active | 16/03/2026 – present |
| Officer | TIL SPV 3 LIMITED | 🇬🇧Regno Unito | Active | 18/03/2026 – present |
| Officer | BYGD HF LIMITED | 🇬🇧Regno Unito | Active | 19/03/2026 – present |
| Officer | TIL SPV 2 LIMITED | 🇬🇧Regno Unito | Active | 21/03/2026 – present |
| Officer | TIL SPV 1 LIMITED | 🇬🇧Regno Unito | Active | 21/03/2026 – present |
| Officer | TANDEM FARMING LIMITED | 🇬🇧Regno Unito | Active | 19/01/2026 – present |
| Officer | BRYN Y GWYNT DEVELOPMENTS LIMITED | 🇬🇧Regno Unito | Active | 05/03/2026 – present |
| Officer | TANDEM INVESTMENTS LIMITED | 🇬🇧Regno Unito | Active | 26/03/2026 – present |
| Officer | VIL 3 LIMITED | 🇬🇧Regno Unito | Active | 27/03/2026 – present |
| Officer | VIL CAPITAL LIMITED | 🇬🇧Regno Unito | Active | 01/04/2026 – present |
| Person with significant control | TANDEM HOLDINGS LIMITED | 🇬🇧Regno Unito | Active | 19/06/2024 – present |
| Officer | TANDEM HOLDINGS LIMITED | 🇬🇧Regno Unito | Active | 02/04/2026 – present |
| Officer | VIL 2 LIMITED | 🇬🇧Regno Unito | Active | 05/02/2026 – present |
| Officer | VIL 1 LIMITED | 🇬🇧Regno Unito | Dissolved | 04/02/2026 – present |
| Officer | VANTAGE INDUSTRIAL LIMITED | 🇬🇧Regno Unito | Active | 15/12/2025 – present |
| Officer | TANDEM INDUSTRIAL LIMITED | 🇬🇧Regno Unito | Active | 15/12/2025 – present |
| Officer | TAKE STOK LIMITED | 🇬🇧Regno Unito | Active | 11/04/2026 – present |
| Officer | VANTAGE REAL ESTATE LIMITED | 🇬🇧Regno Unito | Active | 03/03/2026 – present |
| Officer | HM2 ENERGY STORAGE LIMITED | 🇬🇧Regno Unito | Dissolved | 14/04/2026 – present |
| Officer | HM ENERGY STORAGE LIMITED | 🇬🇧Regno Unito | Dissolved | 17/04/2026 – present |
| Officer | NWHP (HOLDINGS) LIMITED | 🇬🇧Regno Unito | Active | 18/04/2026 – 17/12/2020 |
| Officer | FL ENERGY STORAGE LIMITED | 🇬🇧Regno Unito | Dissolved | 19/04/2026 – present |
| Officer | VOLTA ENERGY STORAGE LIMITED | 🇬🇧Regno Unito | Active | 24/02/2026 – present |
| Person with significant control | TANDEM DEVELOPMENTS LIMITED | 🇬🇧Regno Unito | Active | 20/06/2024 – 26/04/2021 |
| Officer | TANDEM DEVELOPMENTS LIMITED | 🇬🇧Regno Unito | Active | 27/02/2026 – present |
| Person with significant control | TANDEM ENERGY LIMITED | 🇬🇧Regno Unito | Active | 26/06/2024 – 06/05/2021 |
| Officer | RHAEADR HYDRO LIMITED | 🇬🇧Regno Unito | Active | 08/05/2026 – 17/12/2020 |
| Officer | CWM CLOCH HYDRO LIMITED | 🇬🇧Regno Unito | Active | 09/02/2026 – 30/03/2021 |
| Officer | NANT COLWYN HYDRO LIMITED | 🇬🇧Regno Unito | Active | 12/05/2026 – 17/12/2020 |
| Officer | MAES ELWY HYDRO LIMITED | 🇬🇧Regno Unito | Active | 15/05/2026 – 14/04/2021 |
| Officer | WIND HARVESTERS DEVELOPMENTS ML LIMITED | — | Dissolved | 17/05/2026 – 05/08/2013 |
| Officer | TANDEM ENERGY LIMITED | 🇬🇧Regno Unito | Active | 18/05/2026 – present |
| Officer | WERN GAWR HYDRO LIMITED | 🇬🇧Regno Unito | Active | 19/05/2026 – 17/12/2020 |
| Officer | WIND HARVESTERS LIMITED | — | Dissolved | 20/05/2026 – present |
| Officer | NORTH WALES HYDRO POWER LIMITED | 🇬🇧Regno Unito | Active | 24/05/2026 – 17/12/2020 |
| Officer | BRYN Y GWYNT LIMITED | 🇬🇧Regno Unito | Active | 13/01/2026 – present |
05/06/2026
United Kingdom → Wales
02/04/2026
Wales → United Kingdom
28/02/2017
appointed