PMQs: Goldsmith and Cameron on Heathrow third runway

A backbench Conservative MP, who has threatened to quit if there was a government U-Turn to allow a third runway at Heathrow Airport, asked the prime minister to assure him there would be "no policy shift".

David Cameron told Zac Goldsmith that the coalition position has not changed. But he warned "we must not be blind" to expanding airport capacity overall, and making Heathrow operate better when welcoming people to the UK.