Social and environmental documentary photographer Andrew Aitchison has captured daily life in a range of prisons around the UK, from high security closed facilities to open prisons and prisoner resettlement centres. According to Aitchison, working on the series alongside inmates and prison officers at times felt like "going into a different country…you need your passport to get in". Click through for an intimate portrait of daily prison life around the U.K.
(Pictured) This section of Wandsworth prison is known as the central star and it leads to all original wings of the prison. HMP Wandsworth in South West London, England was built in 1851 and is one of the largest prisons in Western Europe. It has a capacity of 1456 prisoners.