HMP Long Lartin is a dispersal establishment for sentenced and remand category A and sentenced category B male prisoners who require high security conditions. It is part of the high security prisons group and connected to West Midland Region. It has a capacity of 622 and the #1 governor is Tom Wheatley.
Long Lartin, which occupies the site of a former war department ordnance depot, was built in the 1960s and opened as a prison in 1971. Although originally opened as a category C prison, it was upgraded to provide dispersal level security in 1973. Further improvements in security were made between 1995 and 1997, and an additional wing, Perrie, was opened in June 1999. In 2009 a new purpose built unit, Atherton, replaced older style wings, increasing the capacity of the prison.
- A, B, C and D wings – older-style wings, which currently hold vulnerable prisoners. They do not have in-cell sanitation and offer night sanitation. A wing has 75 single cells and two safer custody cells.
- Perrie wing – a modern unit with accommodation for up to 111 prisoners. Perrie Blue has 42 single cells and two safer custody cells. Perrie Red has 65 single cells and two safer custody cells.
- Atherton wing – a modern unit with accommodation for up to 183 prisoners. E wing has 93 single cells and F wing has 90 single cells, including one with disabled access.
- Segregation unit – accommodation for up to 42 prisoners, including eight high control, two gated, two safer custody, 14 punishment, two special and two Listener cells.
- Health care – accommodation for up to eight prisoners, including six single cells, one safer custody and one low mobility cell.