The X Factor is a British television music competition to find new singing talent. The fourth series was broadcast on ITV from 18 August 2007 and was won by Leon Jackson on 15 December 2007, with Rhydian Roberts finishing as the runner-up and Dannii Minogue emerging as the winning mentor. Dermot O'Leary presented the main show on ITV, whilst Fearne Cotton presented spin-off show The Xtra Factor on ITV2. Simon Cowell and Sharon Osbourne returned as judges, whilst two new judges, Brian Friedman and Minogue joined the panel. Friedman replaced original judge Louis Walsh, but Walsh was later reinstated after the London auditions.
This series saw a number of changes to the format, most notably the lowering of the minimum age for participants from 16 to 14 and the increase in the number of categories from three to four, resulting from the division of the 16-24s category into separate male and female categories. The series hit the headlines even before recording began. Some of the controversy centred upon whether 14 and 15-year-olds should be eligible to enter, and also on the high-profile dismissals of judge Louis Walsh and presenter Kate Thornton, who were replaced by choreographer and Grease Is the Word judge Brian Friedman and Big Brother's Little Brother host Dermot O'Leary respectively. Before hiring Freidman and Minogue, Cowell had apparently approached colleague and fellow American Idol judge Randy Jackson, and close friend and The X Factor mentor Sinitta. Friedman, however, was only a judge for the London auditions and Walsh was quickly reinstated, with Friedman becoming the show's choreographer. Jackson's prize as winner was a £1 million recording contract. His first single release was "When You Believe", arranged for the finalists by composer Stephen Schwartz and released to download on 16 December 2007, with the physical format following on 19 December. The single became that year's Christmas Number one in the UK Singles Chart.
The show returns for it's fourth series with Dermot O'Leary as the new host. Hopefuls audition for the judges hoping to impress and make it through to the next stage of the competition. Simon decides that new judge Brian isn't working out on the show and decides to ask Louis Walsh to return as his replacement.
The auditions come from Birmingham and Cardiff as more hopefully try and impress the judges. Paris who at 14 last year impressed all the judges but was too young for the competition returns once again. With the competiton now open to 14 year olds and above she manages to impress again and makes it through. Others to impress include Ryan who has been serving in the British Army in Iraq.
More hopefuls good and bad try and impress the four judges in a hope of making it through to the next round of the competition. Dermot is on hand to talk to those who make it through and also to offer comfort to the less successful.
More hopefuls good and bad try and impress the judges and again a place in the next round of the competition. Kelly's father is upset with Simon when he refuses to put his daughter through to the next round. Natasha Benjamin manages to impress all the judges after they hear her history and they her her sing.