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Third runway: Boris Johnson warns of 'stealthy U-turn' on Heathrow

5 September 2012 Last updated at 13:21 BST

The Mayor of London, Boris Johnson, has warned of a "stealthy U-turn" by the government on the third runway at Heathrow.

Speaking on The World At One Mr Johnson, who favours the building of a new airport on the Thames estuary, said it was important that the government "level with Londoners about their intentions".