Our team
Our team
David Murray
David MurrayDirector
David joined as Executive Director in May 2022, from humanitarian charity Article 25, where he was Managing Director. He has over 17 years of experience in the charity sector, and has championed active urban travel infrastructure and conservation.
Maxine Frerk
Maxine FrerkAssociate
Maxine Frerk has wide regulatory experience including 15 years in Ofgem in senior roles.
Dr Martin Hurst
Dr Martin HurstAssociate
Dr Martin Hurst was a senior civil servant on environmental issues for 20 years, including as Water Director in government and Environment Advisor in Number 10, and is by background a professional economist.
Clare Dudeney
Clare DudeneyAssociate
Clare currently leads the Together for a Fair Climate Future programme as an associate with Sustainability First. Developing creative and collaborative responses to the climate crisis and social justice issues. She is also a fine artist and curator.
Zoe McLeod
Zoe McLeodPolicy Director
Zoe McLeod recently became our Policy Director, a newly created role, after many years as an Associate. She is a consumer policy and regulatory expert with a particular focus on energy, water, innovation and consumer vulnerability and engagement issues.
Judith Ward
Judith WardAssociate
Judith Ward has worked with Sustainability First since 2005 and was director for five years. She is an energy policy professional with long-standing practical experience of both the utility and consumer worlds.
Alice Cross
Alice CrossResearch Officer
Alice is Sustainability First's Research Officer, responsible for carrying out research on projects and Sustainability First initiatives, as well as communicating Sustainability First's messages.
Clare Davidson
Clare DavidsonCommunication, Support and Education Officer
Clare is responsible for developing and implementing the organisation’s communications strategy as well as providing education outreach work.
Sharon Darcy
Sharon DarcyAssociate
Sharon stepped down as overall Director in April 2022, and is now acting as an Associate. She has deep expertise in sustainability in public utilities.

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