Speaking on the Olympic legacy, the mayor of London said he would like to make it compulsory for children to do sports 2 hours a day.
During the conference he said: "I would like to see, frankly, the kind of regime I used to enjoy - compulsory two hours sport every day... I've no doubt that is the sort of thing that would be wonderful for kids across this country.
"I think it is of profound importance for the happiness and success of this country that we have more sport in schools."
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