Cosy Homes Oxfordshire: meet the team

The project partners

The Cosy Homes Oxfordshire pilot scheme is a partnership between RetrofitWorks, Low Carbon Hub and the National Energy Foundation.  


Low Carbon Hub is a social enterprise that’s out to prove we can meet our energy needs in a way that’s good for people and good for the planet.

They build community-owned renewable energy projects with schools, communities, and organisations, as well as being involved in programmes reducing energy demand, increasing renewables, and innovating to create the low carbon energy system of the future.

The National Energy Foundation is a charity at the forefront of improving the use of energy in buildings with the aim to give people, organisations and government the knowledge, support and inspiration they need to do so.

This is done through improving new and existing buildings, helping householders save energy and money, providing impartial advice, and tackling fuel poverty.

RetrofitWorks is a multi-stakeholder co-operative developed to deliver high-quality retrofits at a fair price to the customer and the contractor whilst ensuring that customers are supported throughout the process by trained Retrofit Coordinators.

RetrofitWorks is owned by and works with community-based organisations to design and host schemes that deliver energy saving and refurbishment works in buildings.

The project team

Russell Smith

Founder and Director of RetrofitWorks and Parity Projects, and Cosy Homes Oxfordshire project partner

Russell is a chartered civil engineer with years of experience of retrofit, and is the founder of both Parity Projects (leading exponents of retrofit expertise for larger scale approaches) and RetrofitWorks.

He has run a number of large scale retrofit programmes – most recently the £4.5m Warmer Homes programme on behalf of the Mayor of London, and is involved in a 250 heat pump roll-out for OVO energy. As MD of Parity Projects he has worked with the Greater Manchester Combined Authority to build a model of their 1.5m homes, and a national retrofit model to support plans for a National Retrofit Programme for the Construction Leadership Council.

Widely recognised as an industry expert, Russell is a regular speaker at conferences and contributor for industry publications.  Take a look at the RetrofitWorks LinkedIn posts for links to his latest interviews, articles and podcasts.

Tim Lunel

Project Manager for Cosy Homes Oxfordshire and Chair of the Microgeneration Certification Scheme

Tim Lunel

Tim is an experienced project manager. He was Chief Executive of The National Energy Foundation 2005-2012, and is Chair of the Microgeneration Certification Scheme – so he was been working in the home energy sphere for much of his career, during which time the technologies to improve the fabric of buildings and low carbon technologies have improved significantly, and the UK has made progress in decarbonising the grid.

Tim is Treasurer of Hook Norton Community Land Trust and has led the project to get planning permission for 12 new-build PassivHaus homes. He is Company Secretary of Hook Norton Low Carbon Limited – a low carbon community group which was awarded the status of Energy Neutral Village way back in 2014 in the ACE Awards (Academy of Champions for Energy), one of Europe’s most high-profile events that recognises achievements in renewable and sustainable community energy.

The retrofit delivery team

Meet the people responsible for managing the technical delivery of your home energy improvement project:  co-ordinating the team of experienced assessors, highly qualified retrofit coordinators and trusted local contractors, and managing the customer journey through the retrofit process.

Geordie Stewart

Scheme Manager

A skilled construction and project manager with over 25 years of international experience, Geordie is passionate about sustainable and energy efficient solutions in the built environment. He is a trained Retrofit Coordinator and manages the Cosy Homes Oxfordshire team based in Charlbury, Oxfordshire. 

Geordie gained a distinction in his MSc in Architecture and Advanced Environmental and Energy Studies at the Centre for Alternative Technology (CAT) and the University of East London.

His studies covered modules in Environment & energy; Thermal comfort/capacity/performance; Ventilation & cooling; Light & solar gain; Low carbon refurbishment; Indoor air quality; Post occupancy evaluation; Materials; Solar thermal; Wind power and Micro-hydro.

Cathy Ryan

Community Engagement Manager

Cathy is Community Engagement Manager for the Low Carbon Hub and works directly with the Community Advocate Groups who promote Cosy Homes Oxfordshire in and around their communities across Oxfordshire.

These groups are motivated by a common purpose to lower carbon emissions by retrofitting our homes to make them more energy efficient for the future. Cathy helps them to introduce Cosy Homes within their communities, setting up talks and presentations that explain the retrofitting process, and holding regular meetings where the groups compare notes and learn from each other’s ideas and experiences.

Cathy is Chair of Hook Norton Community Land Trust, which is developing a community-led housing project of affordable, sustainable homes that will have a positive impact on the environment.

Originally trained as a theatre designer and having worked with a theatre company exploring the effects of homelessness on the lives of young people, Cathy has developed a lasting interest in all aspects of housing and homes.

Michael Huth

Membership Development Manager

Michael is responsible for building up and supporting the Cosy Homes membership network of trusted contractors, installers and architects to provide a quality whole house retrofit service throughout Oxfordshire.

He has extensive understanding of the built environment, the use of sustainable building materials and renewable energy systems and is passionate about helping companies create a healthy low energy and low carbon building envelope, thus reducing the risk of unintended consequences.  

Michael graduated from Oxford Brookes University with a first class degree in Business and International Management, and has worked with contractors, installers and building professionals as part of his technical and business  roles for over 20 years.

Arantxa Mathias

Client Support Coordinator

Arantxa plays a key role in guiding customers through the Cosy Homes Oxfordshire retrofit service. She is based in our Charlbury office and is enjoying supporting the team and developing her knowledge of retrofit.

An experienced administrator, Arantxa has worked in customer services for the hospitality, design and Innovation sectors.