Written by an established author in the field, this book explores the politics of modernisation and transformation of probation in the criminal justice system. It is unique in drawing upon innovative social theories and moral perspectives to analyse changes in the probation service by including data from quantitative and qualitative empirical research. This highlights the challenges to, but also support of, the platform of modernisation that culminated in the transformative Rehabilitation Revolution. Providing critical tools for the reader to use in their own work and studies, it makes a timely contribution to criminal justice and probation theory and uniquely provides insights into what representatives of other organisations think about probation – from the outside looking in.