Ashford is a town and suburb of London located almost entirely in the Surrey borough of Spelthorne, but with a small section lying within the London Borough of Hounslow, England. Mostly residential, Ashford is 13.5 miles (21.7 km) WSW of Charing Cross, London, forms part of the London commuter belt, with a minor stop on the Waterloo to Reading Line (which has two branch lines) and has a long commercial high street. It is centred 2.5 miles (4.0 km) south of London Heathrow Airport, to which a portion of its economy relates, including business premises relating to aviation and the distribution of air freight – the main cargo depot being next to an adjoining village, Stanwell.