There are currently four bidders hoping to take over the venue but West Ham are the favourites.
But at his first meeting chairing the organisation deciding the future of the Olympic Park, the London Mayor told London Tonight that he is not "wedded to football".
Have West Ham's chances of moving into the Olympic Stadium been dealt a blow by Boris Johnson?
The details now from our political correspondent Simon Harris.
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The Met Office warned children and the elderly are most at risk if temperatures soar to 33C between noon tomorrow and Thursday morning.
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A man who was arrested for drink-driving in Essex penned a heartwarming letter of thanks praising the officer who pulled him over.