Ant and Dec present the fifth audition show, as the judges - Simon Cowell, David Walliams, Amanda Holden and Alesha Dixon - give their verdicts on more of the nation's best, and worst, performers. Queuing up to take the stage, acts of all ages and ab... (more)ilities are determined to prove they're worthy of the £250,000 cash prize and a slot at the Royal Variety Performance