The annual search for a star continues as more auditionees try to win over Simon Cowell, David Walliams, Amanda Holden and Alesha Dixon with their talents. The acts all have their eyes on the prize of £250,000 and a slot at this year's Royal Variety Performance, but first they must secure a place in the live semi-finals. Will any of them be good enough for the judges' new golden buzzers, like last week's dancing duo Paddy and Nico? Ant and Dec host