The Royal London Hospital is a large teaching hospital in London, United Kingdom. It is part of Barts Health NHS Trust. The Royal London provides district general hospital services for the City and Tower Hamlets and specialist tertiary care services for patients from across London and elsewhere. It is also the base for London's Air Ambulance, operating out of a rooftop helipad. There are 675 beds, 110 wards and 26 operating theatres at The Royal London Hospital. The new building opened in February 2012.