A public health crisis is gripping the UK. Improvements in life expectancy have stalled, health inequalities have widened, obesity and alcohol misuse are placing an increasing strain on health services and urban air pollution is now widely recognised as a serious health hazard. COVID-19 revealed the weaknesses of the UK's public health system, once thought to be among the best in the world. Against this background, this book examines the organisational and political barriers to an effective public health system showcased through the UK. It urges that what is needed is a new social contract, in which health policy is truly public.