Ant and Dec host the live grand finale of the 13th series of the national talent search, joined by regular judging panel Simon Cowell, David Walliams, Amanda Holden and Alesha Dixon. The series has showcased all manner of performers over the past few weeks, from singers and magicians to dancers and comedians, and now the last remaining acts to make it through the week of live shows will be competing to impress the British public with their talents. The winning act chosen by the votes of viewers will receive a £250,000 cash prize, and will also get the chance to perform at this year's Royal Variety Performance.