Which hospital is the the oldest in Britain?

St Bartholomew's Hospital, commonly known as Barts, is a teaching hospital located in the City of London. It was founded in 1123 and is currently run by Barts Health NHS Trust. It is the oldest hospital in Britain still providing medical services which occupies the site it was originally built on, and has an important current role as well as a long history and architecturally important buildings.

Barts was founded by Rahere (died 1144, and entombed in the nearby Priory Church of St Bartholomew the Great), a favourite courtier of King Henry I. The Dissolution of the Monasteries did not affect the running of Barts as a hospital, but left it in a precarious position by removing its income. It was refounded by King Henry VIII in December 1546, on the signing of an agreement granting the hospital to the Corporation of London.