The talent show returns for its 12th series with Radio One DJ Nick Grimshaw and singer-songwriter Rita Ora joining Simon Cowell and Cheryl Fernandez-Versini on the judging panel. New presenting duo Caroline Flack and Olly Murs host as the search for a potential music star with an amazing voice and that extra special something begins. Tonight's edition will see the start of the auditions, as hopefuls perform in front of the judges and an arena audience of thousands in the hope of securing a place at Boot Camp.