We talk to special guests Charlie Gilmour and Luke Billingham about the importance of reading for prisoners. Luke works for Haven Distribution, a charity that provides books to prisoners, and Charlie spent time in prison after protesting at a student demonstration in 2010. We discuss the politics and the pitfalls of the UK's prison system and how books can 'open windows' to those inside.

For more information about the important work Haven does, go to havendistribution.org.uk.

CW: suicide