Reading (HM Prison), formally HM Prison & YOI Reading is a British prison.
HM Prison Reading was built in 1844 as the Berkshire County gaol in the heart of Reading, Berkshire on the site of the former county prison, alongside the site of Reading Abbey and beside the River Kennet. Designed by George Gilbert Scott it was based on London's New Model Prison at Pentonville with a cruciform shape and is a good example of early Victorian prison architecture. It was designed to carry out what was the very latest penal technique of the time, known as the separate system. As a county gaol it also served as the site for executions, the first one in 1845 before a crowd of 10,000, the last one being carried out in 1913.
From 1916, it was used to hold Irish prisoners involved in the Easter Rising. It closed as gaol in 1920 and has also been used as internment site in both world wars, a borstal and for a variety of other purposes.
In 1973, Reading was redesignated as a local prison and around that time its old castle wall was removed. In 1992 it became a Remand Centre and Young Offenders Institution, holding prisoners between the ages of 18 and 21 years. It now has about 270 inmates. The Remand centre Library service is run by Reading Borough Libraries.