Ant and Dec host the second semi-final as more acts that made it through the audition rounds perform in front of the judges and a live audience for a chance of a place in the final. Judges Simon Cowell, Amanda Holden, Alesha Dixon and Bruno Tonioli, as well as presenters Ant and Dec, have the power to send one act straight through to the grand final with the golden buzzer, before the audience votes for their favourite act, who will gain the second place.
