In the past decade community groups have been portrayed as the solution to many social problems. Yet the role of 'below the regulatory radar' community action has received little research attention and thus is poorly understood in terms of both policy and practice. Focusing on self-organised community activity, this book offers the first collection of papers developing theoretical and empirically grounded knowledge of the informal, unregistered, yet largest, part of the voluntary sector. The collection includes work from leading academics, activists, policy makers and practitioners offering a new and coherent understanding of community action 'below the radar'. The book is part of the Third Sector Research Series which is informed by research undertaken at the Third Sector Research Centre, funded by the Economic and Social Research Council and Barrow Cadbury Trust.