Ant and Dec return with a fresh search for the nation's brightest new star, as a wide assortment of contestants, from a hypnotising dog act to a girl with a gravity-defying hula hoop, compete for the chance to win £250,000 and a slot at this year's Royal Variety Performance. There's no change to the judging line-up, with Simon Cowell, David Walliams, Amanda Holden and Alesha Dixon all returning to give their verdicts on the hopefuls in this first audition show