Who we are

The Team
We’re an award-winning team of engineers (and other helpers) who are militant in our pursuit of energy savings in buildings. We’ve designed passivhaus retrofits (the first two in the UK), passivhaus new-builds, developed programmes for retrofitting social housing property and saving energy in hair salons and helped over 300 clients build or renovate warmer and more comfortable homes.

Akta Raja

Managing Director

Akta co-founded the business and led the company though its R&D phase and arranged its sale to Ansor Ventures to accelerate its growth. Akta has a deep understanding of the energy efficiency market and will focus on the company’s acquisition strategy. Akta has a degree in law from the University of Cambridge.

Will Ray

Technical Director

Will leads the design and product specification side of the business. He has over 13 years’ experience in low carbon buildings and sustainability. A qualified engineer, he was previously head of the energy design centre at the Rockwool Group in the UK, Technology Strategy Manager at The Carbon Trust and Sustainability Engineer at the British Antarctic Survey. He has a degree in engineering from the University of Melbourne.

John Brooks

Finance Director

John is a chartered accountant, having joined Ansor Ventures after four years at Ernst and Young. John has developed expertise in managing the finances of small companies and works to deliver all reporting and budgeting at the company. He has a degree in international relations from St Andrews University.


John Palmer

Operations Director

John leads the delivery side of the business. He joined the Company in December 2014. He previously ran his own low energy design consultancy where he led mid-scale developments and qualified as a Passivhaus consultant. He spent 16 years as an engineering officer in the Royal Navy, which included three years at the Ministry of Defence John has a degree in engineering from the University of Cambridge.

Marine Sanchez


Marine trained as an engineer at the Ecole Centrale de Nantes and obtained a Masters in Sustainable Performance and Design before joining the company in 2011. Marine has led the design of the company’s projects since then. Marine is a certified Passivhaus designer, now providing training to architects and engineers wishing to achieve the qualification and is a member of the advisory group at the UK Passivhaus Trust.

Solomos Georgiou


Solomos has a degree in engineering from the University of Bristol. He has a masters in sustainable energy futures from Imperial College where he worked with Shell to identify opportunities for reducing CO2 emissions using energy efficiency, renewables and waste heat utilisation. He designs renewable energy systems and manages installations.