Britain Behind Bars: A Secret History | Preview (Channel 4)

Rob Rinder uncovers a secret history of Britain hidden behind our prison walls, investigating the lives of inmates going back centuries and interviewing former prisoners who compare their experiences of today's prison system with that of the past.

In the first episode, Rob visits HMP Dartmoor and explores its fearsome reputation built over centuries, and examines what happens when a brutal regime pushes prisoners to their limit.

Britain Behind Bars: A Secret History begins w/c 20th July on Channel 4.