From the Wikipedia page 
St Bartholomew's Hospital, also known simply as Barts, is a hospital in Smithfield in the City of London.
Barts is the oldest hospital in London, having been founded in 1123, and the oldest in the United Kingdom that still occupies its original site. London's only statue of King Henry VIII is located above a gate at the hospital.
It is operated by Barts Health NHS Trust, which also runs the Royal London Hospital, the London Chest Hospital, Newham Hospital and Whipps Cross Hospital.