To secure health we need to understand both the impacts of climate change on health but also, importantly, effective interventions to protect health. The Health Effects of Climate Change in the UK report brings together up to date evidence to inform policies and actions to secure health. Since the last summary of evidence was published in2012 there has been extensive growth in the evidence and this report collates it and provides the most up-to-date analyses using the most recent UK Climate Projections, published in 2018.