Britain's biggest singing competition returns for a thirteenth series, with this year's series featuring some familiar faces making a return. Simon Cowell once again heads up the judging panel, alongside seasoned judges and music industry veterans Sharon Osbourne, Louis Walsh and Nicole Scherzinger. Dermot O'Leary is also back presenting, offering support to nervous auditionees and a shoulder to cry on for those who fail to make it through to the next stage. High drama and top talent remain the order of the day as more hopeful singers and groups step inside the intimate audition rooms in a bid to win a coveted recording contract. What weird and wonderful performances await this time round, and whose talents will excite the judges?