The Conservative Environment Network brings together thought-leaders from business, politics and civil society to advance conservative environmentalism.

Sam Hall


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Sam joined CEN after having served as a Policy Adviser to Michael Gove when he was Secretary of State for the Environment, Food and Rural Affairs. He was also the Head of Research at the liberal conservative think tank Bright Blue, leading their work on energy and the environment and authoring several policy reports. Before that, Sam was a Parliamentary Researcher for Graham Stuart MP.

Megan trethewey

head of programmes

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Meg joined CEN after three years of working as a Parliamentary Researcher for an MP. During this time she led campaigns on marine energy and tackling plastics. She is currently studying a Masters in Environmental Policy and has previously worked in public relations. 

Lois Toole

Junior Programmes Manager


Lois joined CEN after a six month internship at the European Parliament, working in the Conservative Delegation press office. She has previously worked at Citizens Advice and also has experience as a campaigner and activist. Lois has a Masters in History.

Ben Goldsmith


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Ben Goldsmith is CEO of Menhaden Capital and co-founder of specialist long-term investment group WHEB. He is also a non-executive Board member of the Department for the Environment, Food and Rural Affairs, the co-founder of the UK Environmental Funders’ Network, and an Advisory Council member for the Oxford Martin School.


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Dr Ben Caldecott is the founding Director of the Oxford Sustainable Finance Programme and an Associate Professor at the University of Oxford. He co-founded CEN in 2008. Ben also established and led as chair Bright Blue's research programme on energy and the environment. Ben has previously worked as the Research Director for Environment and Energy at the think tank Policy Exchange, as a Vice President at investment bank Climate Change Capital, as Head of Government Advisory at Bloomberg New Energy Finance, as a Deputy Director in the Strategy Directorate of the UK's Department of Energy and Climate Change, and as an Advisor to The Prince of Wales's International Sustainability Unit.

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Benet Northcote is Director, Corporate Responsibility at John Lewis Partnership, having previously been Deputy Private Secretary to The Prince of Wales, where he was responsible for The Prince’s work on the Sustainability and Responsible Business.


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Adrian Gahan is Director of Policy at Blue Marine Foundation. He was previously Managing Director of international sustainability consultancy, Sancroft. Before that he spent three years as an Energy and Climate Change Policy Adviser to the Conservative Party, before which he worked at BP Alternative Energy and with the Delegation of the European Commission to the US.


Isabella Gornall is MD of Seahorse Environmental Communications. Her former roles include Head of Maitland Green, Policy Adviser to Zac Goldsmith MP and EU Environmental Policy Consultant in Brussels. Isabella is also on the Board of UK100, the ambitious network of UK Cities committing to 100% clean energy.

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 Rosa Stewart is Head of External Relations at the energy supplier SSE. Previously she was a Senior Civil Servant at BEIS where she developed a wide range of energy and climate change policy. Earlier roles include working as an energy and infrastructure project finance lawyer at Clifford Chance and managing a power sector reform programme in Nigeria. She is also an Energy Policy Panel member at the Institution of Engineering and Technology.


Dorothée Irving is Head of Grants at the John Ellerman Foundation where she oversees the Foundation’s grant-making operation across its three funding categories: Arts, Environment and Social Action. Previously she looked after arts and cultural heritage grant portfolios at the Paul Hamlyn Foundation and the Rothschild Foundation Hanadiv Europe.