A series of attacks by Islamists released from jail highlights the failure to turn them away from extremism. Today: the story of one inmate we know only as 'Jack' and how he was radicalised in a UK prison.This podcast was brought to you thanks to the support of readers of The Times and The Sunday Times. Subscribe today and get one month free at: thetimes.co.uk/storiesofourtimes.Guest: Sean O’Neill, chief reporter for The Times.Host: David Aaronovitch. See acast.com/privacy for privacy and opt-out information.