Ruth Davis is an advocate, writer and campaigner with over twenty years’ experience of influencing politics and policies on climate change and nature. She has a background in plant sciences and conservation, and has held senior roles at Plantlife, the RSPB and Greenpeace. She acted as an advisor to Defra and to the UK’s COP 26 UNFCCC Presidency team on climate and nature between 2017 and 2022. She has been involved in a wide range of international and domestic campaigns, including action to end the use of coal power in the UK, and in efforts to build support for the transition to nature-friendly agriculture and fishing. She played an early role in securing water company investment in catchment management projects to reduce water pollution and improve wetland habitats and has a long-term interest in policies to tackle the impacts of nutrient pollution on aquatic ecology. She has published essays on the political philosophy and future of environmentalism and was awarded an OBE for public service in 2022.