This book offers the first introduction and practical guide to increasing people's say and involvement in their lives, neighbourhood and services. It draws on a major study of initiatives to involve and empower people. It explores a wide range of schemes across a variety of policies and services, including housing, health care, education, community development, social work and social services. It also examines the underlying principles, politics and philosophy of participation. It offers guidelines for participatory policy and practice and a checklist for evaluating and auditing citizen involvement.