Considering how much experience there now is in providing supervisor training in the UK, relatively little has been written about it. This book creates a lively and readable resource that will be informative and inspirational for those planning for the future of training for supervisors of counsellors, or who create, teach on or apply for supervisor training. The structure and content will invite reflection on the training issues that the authors address. It is intended to be consciously forward looking in a period of rapid development, and is designed to highlight differences between providers as well as the approaches and ideas they share. It is the work of many authors, all of whom are or have been involved in supervisor training in the UK. The book should also be of interest to colleagues involved in training supervisors in other contexts and allied professions: social work, medical and nursing professions, coaching, and teaching. It spans a range of theoretical approaches to supervisor training, and authors thus inevitably write from quite different basic assumptions about supervision.