Sam Longman

Sam is a Distinguished Policy Fellow at the Grantham Research Institute on Climate Change and the Environment at LSE, working as part of the core team of the National Heat Risk Commission to help strengthen the UK’s preparedness for extreme heat. He joined LSE in October 2026 on a 12-month secondment from Transport for London (TfL), where he is Head of Sustainability and Corporate Environment.

Background

Sam is the Deputy Chair of the London Climate Ready Partnership, where he chairs the Climate Costs Community of Practice, developing evidence and practical tools to support investment in climate adaptation and resilience.

His wider experience includes serving as Vice Chair of the UITP Sustainable Development Committee, where he led the Climate Change Adaptation Working Group, and as a board member of Flood Ready London, supporting delivery of the London Surface Water Strategy. He has stepped back from these roles during his secondment. He is also a trustee of Whitstable Umbrella Community Centre.

Research Interests

• Climate adaptation and resilience
• Environmental policy and strategy to investment, research and delivery
• Financial impacts of climate change