Live Semi-Final 3

Ant and Dec host the third of this week's live semi-finals, which sees some of the acts that have previously impressed the judges Simon Cowell, Amanda Holden, Alesha Dixon and David Walliams return to the stage. Eight acts will perform, with the first finalist chosen via public vote and the second finalist chosen by the judges. Who will dazzle the judges and viewers at home to progress to the next phase of the competition?