Boris Johnson today urged the Government to resist the "great Moloch of aviation capacity" and rule out a third runway at Heathrow before the next election. At a rally against expansion, he said it would be "totally nuts" for the Conservatives to go to the polls without having buried the idea.
He said: "It is just too difficult to deliver - 15 years at least it would take to bring about.
"Above all you would be inflicting noise pollution not just on west London but on huge parts of London that don't even know they are going to be affected.
"That is not the right way forward for the greatest city on earth."The protest in Barnes, west London, attracted around 1,000 residents who live under the airport's flight path.
More top news
His top speed is believed to be the highest ever recorded in the UK by a rider carrying a pillion passenger.
The mayor took time out from City Hall to join Conservative party workers handing out leaflets in Uxbridge and South Ruislip.
No matter where you look, London's population is getting older - with the exception of one of the capital's boroughs.