Longford is a village that has never had a church so can also be considered a hamlet, immediately north-west of London Heathrow Airport in the London Borough of Hillingdon, formerly part of Harmondsworth by tithes, land tax, vestry and still by Church of England parish. Its historic county is Middlesex. Longford is 15.8 miles (25.4 km) west of Charing Cross and within the M25 motorway which marks its western boundary with Colnbrook, Berkshire.