Biggin Hill is a town in the London Borough of Bromley, about 15.2 miles (24.5 km) south-southeast of Charing Cross. It is separated from London's built-up area by the Metropolitan green belt and is located adjacent to the Greater London boundary with Kent and Surrey. Prior to the creation of Greater London in 1965, it was part of Kent. At the 2011 Census, Biggin Hill had a population of 9,951.