Contestants audition in the Wembley SSE Arena before this season's new panel of judges: Robbie Williams, Ayda Williams, Louis Tomlinson, and Simon Cowell. Dermot O'Leary returns as host.

Cast: Dermot O'Leary, Simon Cowell, Louis Tomlinson, Ayda Field, Robbie Williams, Ross Alexander, Andy Hofton, No Labels, Charlotte Lee, Oli London, Misunderstood, Kezia Povey, Janice Robinson, Molly Scott, Danny Tetley