To kickstart Season Four of Crossing Channels, Richard Westcott (Cambridge University Health Partners and the Cambridge Biomedical Campus) talks to Prof Alison Liebling (University of Cambridge), Prof Nicola Padfield (University of Cambridge) and Prof Arnaud Philippe (University of Bristol, former IAST fellow) about the growing prison population, the prison experience, and the most effective ways to rehabilitate ex-offenders.Our experts discuss why the prison population is growing...