Company officer · Companies House register
Costas Papamantellos
15 former appointments, as recorded on the register.
Former appointments
- Green Gas Holdco 2 Limited
Director · Sept 2024 – Jun 2025
- Green Gas Holdco 1 Limited
Director · Sept 2024 – Jun 2025
- Future Biogas Holdco Limited
Director · Sept 2024 – Jun 2025
−£10.3m
Loss after tax
- Creca Hydrogen Limited
Director · Aug 2024 – Jun 2025
- Hammars Hill Hydrogen Limited
Director · Aug 2024 – Jun 2025
- Binn Ecopark Hydrogen Limited
Director · Jan 2024 – Jun 2025
−£878k
Loss after tax
- Strathallan Hydrogen Limited
Director · Oct 2023 – Jun 2025
−£533k
Loss after tax
- Green Cat Hydrogen Developments Limited
Director · Aug 2023 – Jun 2025
−£40.9k
Loss after tax
- R-Gen Renewables Limited
Director · Nov 2020 – Jun 2025
- Eti Wind Holdings Limited
Director · Dec 2024 – Jun 2025
- Eti UK Holding Limited
Director · May 2024 – Jun 2025
- Eti Green Gas Limited
Director · Sept 2024 – Dec 2024
- Rwe Principal Investments UK Limited
Director · May 2024 – Oct 2024
- Eti Wind Holdings Limited
Director · May 2024 – Oct 2024
- Eti Wind Holdings Limited
Director · Apr 2021 – Feb 2024
From the Companies House register, checked 2026-10-28. Names, roles and dates only; contains public sector information licensed under the Open Government Licence v3.0. Profit is each company's latest filed figure. Appointments under other records of the same person may be listed separately.
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