Bexley was an urban district and then a municipal borough within the County of Kent. In 1965 it joined with other neighbouring urban districts to become the London Borough of Bexley within Greater London.
It is located 13 miles (21 km) east-southeast of Charing Cross (the centre of London for measurement purposes). It was an ancient parish in the county of Kent. As part of the suburban growth of London in the 20th century, Bexley increased in population, becoming a municipal borough in 1935 and has formed part of Greater London since 1965.