Meet The Team


Peter Rickaby


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Peter Rickaby studied architecture at Cambridge University and holds a doctorate in energy studies from the Open University. Before founding Rickaby Thompson Associates he worked in leading architectural practices in Britain and New Zealand, and as Assistant Director of the Centre for Configurational Studies at The Open University, where he researched energy-related aspects of urban and regional planning. He is an experienced SAP and NHER Assessor and trainer, and received NHER Home Energy Rater of the Year Awards in 1995 and 2000. He is also an accredited Low Carbon Energy Assessor through CIBSE, and a BREEAM Accredited Professional. He has served as a member of the Social Housing Group and the Council of the Energy Efficiency Partnership for Homes (EEPH), of the RIBA’s Sustainable Futures Group, of the Zero Carbon Hub’s Energy Work Group and Carbon Compliance Standard Task Group, of DECC’s Green Deal Installer Accreditation and Quality Forum and of BSI’s PAS 2030 Steering Group (for the Publicly Available Specification for the Green Deal). He is currently a member of the Whole House Retrofit Group of the Energy Efficiency Partnership for Buildings (EEPB) and co-chairs the Editorial Board for Retro Expo and the judging panel for the Retro-Expo Awards. He is active in training building and housing professionals in all aspects of low carbon design and refurbishment, presenting lectures, seminars, workshops and courses throughout the UK.


Catherine Arotsky

Principal Energy + Sustainability Consultant

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Catherine Arotsky is a Chartered Engineer through the Energy Institute, and has over fifteen years’ experience in energy and environmental consultancy in relation to buildings, working at FaberMaunsell Ltd (previously ECD Energy and Environment) and National Energy Services before joining Rickaby Thompson Associates. She has worked extensively with housing associations and local authorities, undertaking specification reviews, providing energy efficiency and sustainability advice, and monitoring of innovative technologies. Catherine is an EcoHomes and Code for Sustainable Homes Assessor, a BREEAM Assessor, a CEEQUAL Verifier, and a CIBSE Low Carbon Energy Consultant. She also has experience in evaluating new and renewable energy technologies such as CHP, wind-power, solar water heating and fuel cells. Catherine currently manages the Environmental Assessment Consortium and is engaged in monitoring and evaluation work.


Kathryn Derby

Senior Energy + Sustainability Consultant

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Kathryn Derby joined Rickaby Thompson Associates in 2006 as a graduate in Environmental Sciences from the University of East Anglia. During her studies Kathryn developed a particular interest renewable energy technologies, looking particularly at practical issues of energy efficient building construction and domestic energy technologies. Kathryn’s final year dissertation reported research into solar water heating, monitoring the performance of systems and consumer attitudes to them. Kathryn is an accredited On Construction Domestic Energy Assessor (OCDEA) through the National Home Energy Rating (NHER) scheme, a Code for Sustainable Homes Assessor and a BREEAM Domestic Refurbishment Assessor. She has particular experience of Building Regulations, Parts L1A, L2A and L1B compliance assessments, including new dwellings and the refurbishment, extension and change-of-use of existing dwellings. Kathryn is also experienced in the comparative evaluation of low carbon retrofit options for existing dwellings.


Candice Butterfield

Assistant Sustainability Consultant | Office Manager

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Candice Butterfield joined Rickaby Thompson Associates in 2013, in the dual role of Assistant Sustainability Consultant and Office Manager. Candice qualified in Business Studies in South Africa and the UK, and worked for the Stanley Davis Group and Network Rail before moving to Vinci Construction in 2007 as an Assistant Environmental Consultant.

Candice is a Code for Sustainable Homes Assessor, and is experienced in the collation of evidence to support Code for Sustainable Homes and BREEAM assessments, and in the preparation of Energy Performance Certificates.

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Andrew Burke


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Andrew Burke studied architecture at Cambridge University where he developed his long-term interest in building physics and architectural implications of energy efficiency, leading to a doctorate from the Open University. His career began in a local authority research and development group that both designed low energy, high density, inner-city housing and monitored the performance of demonstration projects. As an architect in central government, he developed energy efficiency and fuel poverty policy, based on construction research he project managed. He wrote building regulations and practical guidance relating to ventilation, energy efficiency and access. He led the National Housing Federation’s work on the design, construction and maintenance of good quality, sustainable housing association homes. He worked with officials on housing standards, zero carbon policy, renewable energy, fuel poverty, retrofit and regulation to create the right operating environment for housing associations. He is a member of the National Housing Maintenance Forum which promotes good asset management and maintenance practice to social landlords in UK.

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Catrin Maby


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With degrees in engineering science and energy resources management, Catrin has worked in sustainable energy since 1984, when she set up an energy advice service for London tenants, and produced handbooks on recycling, draughtproofing and heating advice.  During the 90s she worked with Birmingham City Council to develop energy efficiency aspects of urban renewal programmes, trained over 1,000 people in energy awareness, developed energy awareness materials for use in core skills adult education, and assisted several local authorities in producing HECA strategies.

In 1999 Catrin helped establish Severn Wye Energy Agency, and as CEO built it to a 45 strong organisation, leaving in 2015 to research homes energy retrofit as a PhD candidate with Cardiff University. Catrin has led European partnership projects on energy advice (SErENADE), retrofit of social housing (SHARE), and comunity-scale delivery of retrofit (Countdown to Low Carbon Homes), as well as the innovative Stroud Target 2050 programme which included one of the 5 UK ‘Pay As You Save’ pilots.