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Gareth Thomas

Gareth Thomas

Chief Executive Officer , National Biodiversity Network Trust

Dr Gareth Thomas MRSB is Chief Executive of the National Biodiversity Network Trust, the UK’s national biodiversity data charity. He leads the Trust’s work to make biodiversity data more accessible, useful, and impactful across government, business, conservation, and research, while strengthening the NBN Atlas as a core part of the UK’s environmental data infrastructure.

Previously, Gareth was Head of Research Innovation at the Natural History Museum, where he led work connecting biodiversity science to business, finance, and policy. This included developing the Biodiversity Intactness Index as a tool to support better decision making and building major cross-sector partnerships.

Gareth works at the intersection of science, policy, finance, and public interest, with a focus on turning biodiversity evidence into practical insight for investment, planning, resilience, and nature recovery. He is also a Trustee and Board Director of Chester Zoo, and contributes to wider international discussions on nature-related disclosure, biodiversity markets, and international standard setting.

He has spoken at Bloomberg, the World Biodiversity Forum, and across Climate Weeks and the UN climate and biodiversity COPs.

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