Peter Barham is a psychologist and historian of mental health. He has been working, writing, and engaging critically, in the mental health field for more than fifty years.

Peter Beresford OBE is Visiting Professor at the University of East Anglia and Co-Chair of Shaping Our Lives, the national disabled people's and service users' organization and network.

Ker Wallwork is the project archivist for the Peter Campbell Legacy Project, hosted by the Bishopsgate Institute, where Peter Campbell's extensive archives compiled over more than four decades have been donated.