 Of the participants that took part, forty-five made it past this stage and into the five live semi-finals – of these acts, dance troupe Boyband, singer Calum Scott, choir Revelation Avenue, dance act Entity Allstars, and comedy singer Lorraine Bowen, each received a golden buzzer during their auditions – with nine appearing in each one.In a minor change to the show's "Wildcard act" format, the series saw the introduction of the "Public Wildcard".Like the "Judges' wildcard", if a semi-finalist was eliminated in their semi-final at the Judges' vote, they became eligible to be picked as a wildcard act by the public, who would vote on which one they would like to reinstate into the final once all the semi-finals had been aired, with their choice being the one to have received the most votes by the time the final was due to be aired.