King?s College Hospital is one of four major trauma centres in London, serving a population of 4.5 million people from South East London to the Kent coast. Over the past year and a half, there have been 362 landings on the helipad, which is an average of four landings every week. Previously helicopters had to land in Ruskin Park and then move patients to a road ambulance, adding 25 minutes to the emergency transfer. In the first year after the helipad opened, 162 patients were brought to King? by air ambulance.