Ant and Dec host the eleventh series of Britain's biggest talent competition as judges Simon Cowell, Amanda Holden, Alesha Dixon and David Walliams return for the sixth year running to give their verdicts on more weird and wonderful auditions. As the first round of auditions get under way, which performers will impress the judges and who will be going home disappointed? Only one talented act can claim victory, winning the opportunity to perform at this year's Royal Variety Performance.