Ant and Dec kick off another search to find the nation's most impressive performers. The format is the same as previous years, but there are two major differences - no Piers Morgan on the judging bench and Simon Cowell is absent until the live shows. Joining Amanda Holden in Liverpool, Birmingham and Cardiff are comedian Michael McIntyre and US superstar David Hasselhoff, who get to see acts including a nine-year-old boy comedian and a 66-year-old dog trainer who performs a dance with her two dogs. At stake is a cash prize of £100,000 and the chance to appear at this year's Royal Variety Performance.