This is what the future used to look like. Dozens of prisons were built in the UK between 1842 and 1877; over 30 of them remain in use today. For over 20 years Andy Aitchison, the UK’s foremost prison photographer, has photographed behind the walls. Incarcerated is his unique exploration of how this Victorian prison infrastructure has persisted, and what these old buildings mean for the people who live and work inside.