Longford is 16 miles (25.5 km) west of Charing Cross and within the M25 motorway which marks its western boundary with Colnbrook, Berkshire.

In the same year the Fairey Aviation Company opened an airfield, the Great West Aerodrome, southeast of Heathrow village.

Middlesex County Council opened a large sewage sludge settlement works west of Perry Oaks farm; in the 1990s it was removed and Heathrow Airport's Terminal 5 is there now.

The last bridge or ford in the west over the Wraysbury River marked the boundary of Colnbrook which has been superseded by the M25 motorway which the road then crosses over.

Shortly south of the main street gravel is instead close to the surface except near rivers and northeastward of the village, and less fertile clay soil dominates for many miles.

Longford retains an old-fashioned community centre character, in particular a former and an existing public house which are listed buildings only at Grade II mostly on age rather than simply architecture.

[6] Other listed buildings include Longford Meeting House, Queen River Cottage and adjoining Willow Tree Cottage,[7] and King's Bridge which is the name of the 1834-built main bridge by the very last building at the west end of the (old) Bath Road street, which crosses the nearby siphoned off Longford River, which Charles I had constructed — this feeds Bushy Park and Hampton Court Gardens.

[10] Many of its buildings are included in the Longford Village Conservation Area, which was designated in 1988 with a minor boundary change in 1999.

The plan on page 99 of the Airports Commission report confirms that the proposal requires the demolition of every building at Longford.

[12] The stages involved in bringing forward the proposed development are set out on the Heathrow Expansion website.

[13] Of residents of the output area Hillingdon 31A (Cranford, Longford and West Harmondsworth) 938 people (or 51.2%) declared themselves to be Christian in 2011.

[14] Gurdwaras exist on Martindale and Hanworth Road, Hounslow, the latter being Sri Guru Singh Sabha.