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 X Factor (UK) Season 4 Episodes...

• s04e01 - Auditions 1
• s04e02 - Auditions 2
• s04e03 - Auditions 3
• s04e04 - Auditions 4
• s04e05 - Auditions 5
• s04e06 - Auditions 6
• s04e07 - Bootcamp 1
• s04e08 - Bootcamp 2
• s04e09 - Judges Houses 1
• s04e10 - Judges Houses 2
• s04e11 - Live Show 1 : Top 12 perform
• s04e12 - Live Results 1 : Down to 11 acts
• s04e13 - Live Show 2 : Top 11 perform
• s04e14 - Live Results 2 : Down to 10 acts
• s04e15 - Live Show 3 : Top 9 perform
• s04e16 - Live Results 3 : Down to 8 acts
• s04e17 - Live Show 4 : Top 8 perform
• s04e18 - Live Results 4 : Down to 7 acts
• s04e19 - Live Show 5 : Top 7 perform
• s04e20 - Live Results 5 : Down to 6 acts
• s04e21 - Live Show 6 : Top 6 perform
• s04e22 - Live Results 6 : Down to 5 acts
• s04e23 - Live Show 7 : Top 5 perform
• s04e24 - Live Results 7 : Down to 4 acts
• s04e25 - Live Show 8 : Top 4 perform
• s04e26 - Live Results 8 : Down to 3 acts
• s04e27 - The Final
• s04e28 - And the Winner is ...

The X Factor (UK) Show Summary

Each X Factor judge is in charge of a different section of singers on the show. The judges do not know what section of the competition they will be in charge of until the audition process has finished. Each judge then has to pick four acts to take forward to the live section of the show. Each week the two acts with the lowest amount of public votes have to sing again in a final showdown after which the judges decide who should be eliminated. Once there are only five acts left remaining it becomes left to the public to decide who should go.