[Samm]

The talent extravaganza returns with a new look for its 10th series and welcomes Sharon Osbourne back to the judges' desk in her first permanent role on the show since 2007. Replacing Tulisa, she joins Gary Barlow, Nicole Scherzinger and Louis Walsh (who recently announced this will be his final year) to search for the nation's next singing sensation. In a change to the usual format, The X Factor will be shown twice a week from the very beginning, with Saturdays initially dedicated to the closed-room auditions that fans will remember from the first five years of the show. The most impressive acts then progress to Wembley Arena on Sundays to face their second performances in front of an audience of thousands. Dermot O'Leary hosts

8PM on ITV