Ashford is a town in Surrey, England, west of central London. Its name derives from a crossing point of the River Ash, a distributary of the River Colne. Historically part of Middlesex, the town has been part of Surrey since 1965. Ashford consists of relatively low density low- and medium-rise buildings, none of them being high rise. If excluding apartments (at the last census 27% of the housing stock) most houses are semi-detached. Ashford railway station, on the Waterloo to Reading Line, is served by South Western Railway. Heathrow Airport is north of the town. A leading gymnastics club, HMP Bronzefield and one of the sites of Brooklands College are in the town. Ashford Hospital, which began as a workhouse, is to the north of the town centre. Ashford Common has a parade of shops and is a more residential ward that includes part of Queen Mary Reservoir and all of its related water treatment works. The town is surrounded by some areas of green space including The Princes Club, Bedfont Lakes and Shortwood Common. Topography Ashford is in the almost flat alluvial plain formed by the historic courses of the River Thames on fairly fertile but gravelly soil in centuries past covered by deciduous forest for wood gathering, with clearings of meadow for pasture and to a lesser extent arable farming to supply the London market; sheep grazing continues today around the reservoirs. In common with western fringes of Greater London, gravel commences often within a metre of the surface which has led to 20th-century gravel extraction, which has formed the lakes to the north of the railway line. The extreme west is Shortwood Common, partly converted to a recreation ground, Ashford Park School, a cemetery. North of this is the pair of Staines Reservoirs, the other green buffer is The Princes Club, Bedfont Lakes, spanning the northeast border; these areas constitute Metropolitan Green Belt buffers to the country's largest city. The area includes postally much of Queen Mary Reservoir (which covered most of the parish to the south of Littleton and almost none of historic Ashford) named after the wife of George V, Mary of Teck. Most of the land is devoted to suburban and low-rise urban housing – as well as recreational areas, green belt in part of the Bedfont/Feltham fringe exists in the form of meadows used for walking, horse grazing and equestrianism around Feltham Young