Our experts


David Weatherall  

  • Fuel poverty, cold homes and energy efficiency
  • Energy Performance Certificates and the Green Deal
  • The rented sector – both private rented and social housing
David Weatherall pic

David is one of the Energy Saving Trust’s most experienced spokespeople and has worked on the policy issues around energy efficiency for nine years. In those nine years the number of people in private rented homes has nearly doubled; some of David’s most important work has focused on ensuring that private tenants don’t get left out in the cold when it comes to energy efficiency. David has also worked closely with government on the development of energy performance certificates – an issue for anyone selling or renting a home, or taking advantage of the Green Deal. David has featured as a media spokesperson on national radio, News 24 and Sky News.


Duncan McCombie  

  • Sustainable growth in Wales
  • Welsh energy efficiency schemes
Duncan McCombie pic

After spending four years running his own successful consultancy business, Duncan joined the Energy Saving Trust as the organisation moved towards a more strategic, business-focused approach in Wales. He has extensive experience in the utilities industry after rising through the ranks at Thames Water. Duncan’s main aim is to ensure that Wales capitalises on the fast-moving green economy to the full.


Ian Cuthbert  

  • Green technologies
  • Installation and installer training
  • Consumer advice on microgeneration
Ian Cuthbert

Ian is the UK manager for the Energy Saving Trust’s advice on renewable and low-carbon technologies. Based in Edinburgh, he directs the research and information designed to helpconsumers to choose the right technologies for their homes, covering all areas of microgeneration. Ian is involved with the technology field trials and he oversees the organisation’s work on supply chain development – which  aims to increase the number of certified installers able to carry out renewable and low-carbon technology installations.


James Russill

  • Energy Efficient Lighting
  • Technology Field Trials
  • Smart Grids
  • Domestic insulation measures
James Russill

James has considerable experience in evaluation and physical monitoring at the Energy Saving Trust. He has project-managed the implementation of the evaluation and reporting process for Ofgem's EESoP 3 programme, the predecessor to the EEC and current CERT programme. More recently, James has been responsible for developing and managing a wide range of research programmes and product field trials on behalf of DECC, energy regulators and the private sector. These have included in-situ monitoring of wind turbines, condensing boilers, LED lighting technology, heating controls, domestic heating standards, solid wall insulation and cavity insulation. 


Jaryn Bradford  

  • Green technologies
  • Testing and certification
  • Installation and installer training
Jaryn Bradford pic

Jaryn, our Senior Technical Manager, joined the Energy Saving Trust in 2007. He has developed and delivered a wide range of initiatives around low-carbon technologies, including the heat pump and solar water heating field trials. Jaryn has represented the Energy Saving Trust on numerous live and recorded television and radio programmes, on the BBC and ITV among others. He has also contributed to industry publications including Utility Week, the Ecologist and Green Futures, as well as the Sunday Times and the Guardian.


Tom Lock  

  • UK and global eco-labelling schemes
  • Product carbon footprints
  • Installation and product standards
Tom Lock pic

Tom has internationally recognised expertise in the fields of environmental product standards and standard setting. He has worked for the Energy Saving Trust for seven years, and currently manages the Energy Saving Trust Recommended product labelling scheme – which is used by almost 300 manufacturers, suppliers and retailers on 3,000 products – as well as the organisation’s UKAS accreditation. He has spoken at international events for the EU and for the US State Department on aspects of energy efficient appliances and labelling, and is currently technical-authoring a new Publicly Available Specification (PAS) for the installation of measures under the new Green Deal on behalf of the British Standards Institute.


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Members of the media with requests should call our press office on 020 7227 0398.


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