This important book is the first edited collection to provide an up to date and comprehensive overview of the third sector's role in public service delivery. Exploring areas such as social enterprise, capacity building, volunteering and social value, the authors provide a platform for academic and policy debates on the topic. Drawing on research carried out at the ESRC funded Third Sector Research Centre, the book charts the historical development of the state-third sector relationship, and reviews the major debates and controversies accompanying recent shifts in that relationship. It is a valuable resource for social science academics and postgraduate students as well as policymakers and practitioners in the public and third sectors in fields such as criminal justice, health, housing and social care.