A House of Commons Transport committee report has rejected the Mayor's plans for a new hub airport in the Thames Estuary - saying the public expense would be too great.
MPs also say transport infrastructure wouldn't cope and wildlife habitats would be affected. Instead, it urges the Government to allow expansion at Heathrow with a third, and possibly fourth, runway.
But not everyone's convinced.
John Stewart from the Heathrow Association for the Control of Aircraft Noise and Louise Ellman from the Commons Transport Select Committee.
More top news
Five rugby league legends were immortalised in bronze today outside Wembley Stadium.
Four people have been bailed after a three-year-old girl was shot in the stomach with an air riffle while she played in a park.
Ten people have been taken to hospital and another two treated for injuries after a bus crashed into a tree in east London.