Boris Johnson got a cooking lesson from Raymond Blanc today, as he visited the chef's restaurant in the City.
The visit was part of the Mayor's drive to boost apprenticeships in the food business.
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John, who began running for Age UK back in the 1980s when he was aged 53, has raised an incredible amount since then - more than £40,000.
It was Tom's second marathon in two weeks run in memory of his father, Martin Campbell.