Rebecca Adlington spoke to our reporter Emma Walden at an event designed to inspire the next generation of Olympic swimmers.
She said that working with kids was one of the best parts of her job as an elite athlete.
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Corbyn was unveiling a poster less than a mile away as Khan gave his final campaign speech to party supporters in London.
Hay fever is an allergic reaction to airbourne pollen. There are 2 million sufferers in London (that's one in 5 people).
The man suffered head injuries after falling from Westminster Bridge and landing on concrete steps.