Ant and Dec present the live Britain's Got Talent final as the eleven remaining hopefuls - including a wildcard act chosen by the judges - perform for their chance to be crowned 2013 champion. At stake is a cool 250,000 pounds, not forgetting the sought-after slot at this year's Royal Variety Performance. Judges Simon Cowell, Alesha Dixon, Amanda Holden and David Walliams will be as opinionated as ever, but the final decision is made by the voting public alone. Which performance will clinch the title this year?