The closed-room auditions begin. This season Simon Cowell is back on the panel for the first time since 2010, former guest judge Mel B takes a permanent role on the show, and Cheryl Cole has also signed up, but she's now Cheryl Fernandez-Versini following her whirlwind wedding in July. Show stalwart Louis Walsh completes the line-up as the experts search for the nation's next singing sensation. The minimum age for acts has now also been lowered to 14, creating more opportunities for all the budding Justin Biebers out there. Dermot O'Leary hosts. (thetvdb.com)