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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The operation carried out by Westminster City Council led to the seizure of £8,000 worth of cigarettes.
Armed troops have been stationed around Parliament to free up armed police to patrol the streets in the wake of the Manchester bomb attack.
Chelsea had planned an open top bus tour to show off the Premier League trophy and hope to add the FA Cup in Saturday's final with Arsenal.