Portillo's Hidden History of Britain

Shepton Mallet (1x3)

Air date: May 04, 2018

Michael Portillo unlocks the doors to four extraordinary abandoned locations. Since it opened 400 years ago, Shepton Mallet prison has seen thousands of prisoners, numerous executions and countless escape attempts. It has been home to gangsters, and during the Second World War a safe house for Britain's most precious historic documents such as the Magna Carta.