'Poisoned' air killing residents near Heathrow, says John McDonnell

Shadow chancellor tells rally to oppose third runway at UK's largest airport that aviation industry has 'consistently lied to us'

People are dying from air "poisoned" by the aviation industry, which has "consistently lied" about expanding Heathrow airport, the shadow chancellor has said.

John McDonnell addressed hundreds of people gathered in London's Parliament Square for a rally to oppose a third runway at the UK's largest airport.