Our People

Sam Barker


Sam has a decade of experience in politics and public policy, with roles in Parliament, think tanks and charities, and through local campaigning. Most recently he has been working on environmental opportunities in developing countries. He lives in Cambridge with his family.

Mark Holmes

Interim Director

Mark joined CEN as Interim Director in April 2017. Mark has worked for a number of politicians in a variety of capacities over the last three years. This has included as a researcher and editor, a political adviser and campaign co-ordinator, and most recently in parliament for a senior Conservative MP. He brings corporate experience in sustainability, public policy, stakeholder engagement and campaign advocacy. Mark is from Yorkshire and lives in London.

Ben Goldsmith


Ben Goldsmith is CEO of Menhaden Capital and co-founder of specialist long-term investment group WHEB. He also chairs the UK Environmental Funders’ Network and is an Advisory Council member for the Oxford Martin School. In chairing CEN, he is supported by a Board and Steering Committee of prominent centre-right environmentalists.

Our Board

Tara Singh has been an adviser to the Prime Minister, the Conservative Party and in Parliament, as well as holding jobs in industry.

Ben Caldecott is Director of the Sustainable Finance Programme at the University of Oxford’s Smith School of Enterprise and the Environment. He is concurrently an Adviser to The Prince of Wales’s Accounting for Sustainability Project, an Academic Visitor at the Bank of England, and a Visiting Scholar at Stanford University. He was previously Head of Policy at the investment bank Climate Change Capital and Research Director for Environment and Energy at the think tank Policy Exchange.

Adrian Gahan is Managing Director of international sustainability consultancy, Sancroft. He previously 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 United States.

Isabella Gornall manages Maitland Green, the environmental public affairs consultancy part of the global Havas Group. She was previously Policy Adviser to Zac Goldsmith in Parliament and an EU Environmental Policy Consultant in Brussels. Isabella is also on the Advisory Council for UK100, the ambitious network of UK Cities committing to 100% clean energy.

Benet Northcote is Head of Corporate Social 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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