LONDON, ENGLAND - APRIL 09:  David Walliams and Rebecca Adlington pose for a picture at the top of the 10m diving platform during the launch of the British Gas SwimBritain event at the London Aquatic Centre on April 9, 2014. SwimBritain events are happening around the country during August and September, find out more and sign up at  (Photo by Miles Willis/Getty Images for British Gas)