Guy Thompson is Managing Director of EnTrade, a pioneering environmental market operator which is creating and operating high integrity nature markets in the UK and was recently established as an independent company in joint venture between YTL UK (the parent company of Wessex Water) and Arup.

Guy has extensive senior executive experience in the private, public and voluntary sectors of developing strategies and policies that deliver better outcomes for people and the environment.  He is passionate about incentivising the private sector to enable a fair and efficient transition to a net zero and nature positive economy.  In his EnTrade capacity, he has led national work on the design and governance of nature markets, including the Financing Nature Recovery UK’s report and recommendations to government in 2023.

He was previously Group Sustainability Director of Wessex Water, leading on ESG strategy, government relations and future regulation, where his work on outcome-based environmental regulation and convening the Sustainable Solutions for Water and Nature (SSWAN) coalition shaped the reforms emerging from the findings of the Independent Commission for Water.

Guy is a former founding Executive Director and Chief Operating Officer of Natural England and Executive Director of Green Alliance, following an early career in the UK environmental NGO community.  He is currently a Board member of The Broadway Initiative and was one of the ENDS Report Power List Environmentalists of the Year in 2025.