Lucy Johnstone is a consultant clinical psychologist and former Director of the Bristol Clinical Psychology Doctorate in the UK, and worked in Adult Mental Health settings for many years. She is author of Users and abusers of psychiatry (3rd edition 2021) and A straight-talking guide to psychiatric diagnosis (2022); and co-editor of Formulation in psychology and psychotherapy: making sense of people's problems (2nd edition 2013) along with a number of other chapters and articles taking a critical perspective on mental health theory and practice. She is Visiting Professor at London South Bank University, an Honorary Fellow of the BPS, and a Fellow of the Royal Society of Arts. She was lead author, along with Professor Mary Boyle, for the ‘Power Threat Meaning Framework’ (2018). She currently works as an independent mental health trainer.