The London Borough of Bexley is a London borough in south-east London, forming part of Outer London. It has a population of 248,287. The main settlements are Sidcup, Erith, Bexleyheath, Crayford, Welling and Old Bexley. The London Borough of Bexley is within the Thames Gateway, an area designated as a national priority for urban regeneration. The local authority is Bexley London Borough Council.