BBC: Heathrow Airport has unveiled three options for a new runway, saying each one would be "quicker and cheaper" than plans for a rival hub airport.
The airport's submission to the Davies Commission, which is looking at raising airport capacity, outlined a runway to the north, north-west or south-west of the existing airport.
It said a new runway could be in place by 2029, allowing 260,000 more flights.
Residents, environmentalists and the London mayor oppose Heathrow's plans.
'Minimising...