Sadegh Nashat is a consultant clinical psychologist and a systemic psychotherapist at the Tavistock and Portman NHS Foundation Trust. As a training lead, he has developed and delivered a range of child, adolescent, and family mental health programmes aimed at education professionals. He has a special interest in the area of social and school exclusion and in mental health interventions in education settings.

Sue Rendall is a consultant child and educational psychologist and is Director of EP Initial and CPD Doctoral Training at the Tavistock and Portman NHS Foundation Trust. She has thirty-seven years' experience working in health and educational contexts, including being head of middle school in a co-educational comprehensive school and, later, after training as an educational psychologist at Birmingham in 1981, as an educational psychologist in three local-authority multidisciplinary services. She was Vice Dean of Postgraduate Training in the Child & Family Directorate of the Tavistock, for six years, and in 2005-6 was seconded to the DfES for two days a week as Professional Advisor for Child & Adolescent Mental Health. Her PhD research was a systemic understanding of school exclusion.