The Royal Borough of Kingston upon Thames is a borough in southwest London, England. The main town is Kingston upon Thames and it includes Surbiton, Chessington, Malden Rushett, New Malden and Tolworth. It is the oldest of the four Royal Boroughs in England. The others are Kensington and Chelsea and Greenwich also in London, and Windsor and Maidenhead. The local authority is Kingston upon Thames London Borough Council.