Robert Prewett is a director at Prewett Bizley architects, a practice that has strong focus on low energy design, in particular retrofit work to existing buildings.

In 2009 he led the design and execution of a deep retrofit of a house within a conservation area in Hackney, where heating demand was successfully reduced by 90%. Since then the practice has completed a number of other retrofit projects, and has established itself as specialist in this field.

Robert has contributed to a set of low carbon retrofit guides published by the Institute for Sustainability, in which he set out the case for the role of ‘retrofit coordinator’. In 2013 the RIBA has invited him to co-host a series of 13 CPD presentations around the UK on the subject of building physics in relation to retrofit.

Prewett Bizley is a founding member of the UK Passivhaus Trust.

Dr Zachary Gill (EngD, CEng, CMVP, Level 5 Diploma in Retrofit Coordination) is a building performance expert, working and challenging the field of low-energy domestic buildings for over 12 years. He undertook his academically commended PhD research on the contribution of user behaviours to building performance with Buro Happold Engineers. Subsequently, he worked with Willmott Dixon Energy Services, pioneering performance-feedback approaches, in particular on their wide-scale social housing retrofit schemes

In 2019, Zack established his own building performance consultancy, SOAP Retrofit Ltd, to continue championing real-world measurement techniques and developing science-based retrofit approaches

Two core mantras drive Zack and SOAP’s work:

1. “You can’t manage what you can’t measure”

2. “In theory, theory and practice are the same. In practice, they aren’t”

Andrew Myer is a semi-retired freelance energy/environmental consultant and domestic energy advisor. He initially trained and practised as an architect, specialising from 1980 in energy issues related to buildings – including passive solar design, and energy efficiency, management and policy. From 1990 this broadened to embrace the wider environmental impacts of building design, construction and use, and the management systems and training necessary for systematic implementation of improved technologies and approaches. Andrew has worked for individual and corporate clients, in government, community and private sectors. From 1992-99 he was involved with ‘Greening the Games’ for the Sydney 2000 Olympic Games and for 2007-2013 was an honorary Commissioner on the Commission for a Sustainable London 2012. He has been a self-employed Domestic Energy Assessor since 2007, a Green Deal Advisor since 2013, a Retrofit Co-ordinator since 2015, and is now a Retrofit Assessor too.

David is a construction and real estate professional with over 40-years’ of experience now working in the private sector after a long spell in the public sector, working in Local Government and for a large Registered Social Landlord (RSL).

Currently, the MD, of a Chartered Surveying and Architectural Services practice in Suffolk, an acting Trustee Board Member for a local housing Charity and Assessor/Mentor for the Retrofit Academy. An acting committee member of the CIOB Ipswich Hub, and past regional chairman/committee member for CABE.

With a passion for tackling climate change by working with approved energy efficiency installers, LA’s and RSL’s to reduce CO2 emissions to their housing stocks.

Stephen joined ecmk in 2014 as an Accreditation Scheme Manager. Stephen is a multi-qualified energy assessor and surveyor with extensive experience in the energy assessor market. Prior to ecmk Stephen ran his own surveying and energy assessment company and worked for BRE Global Ltd.