London Mayor Sadiq Khan wants the city to become the first four-time host of the Olympics and is backing a bid for the 2040 Games.
The ambition of Khan, who has been mayor since 2016, is for the British city to become the "sporting capital of the world."
He believes a successful bid for the 2029 World Athletics Championships could be a launchpad for a repeat of the 2012 London Olympics, which were deemed a huge success.
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