Season 15 - Episode Guide

The search for a new music superstar gets underway as The X Factor returns to ITV. Heralding the start of a new era for the nation's most talked about entertainment show, is a brand-new panel with Robbie Williams, Ayda Williams and Louis Tomlinson joining music mogul Simon Cowell as judges.Returning as host is Mr Saturday Night, Dermot O'Leary, who will be on hand to guide viewers and contestants alike through their X Factor journey, providing them with a word of advice or a much-needed hug as the contestants perform in front of the judging panel.This series sees the return of the arena auditions at The SSE Arena, Wembley, where the hopefuls will have to perform not only for the judges but live in front of members of the public, making it the biggest audition of their lives. Should they impress and secure three or more ‘yeses' they will go through to the judge's deliberation, where the judges will review and decide who gets to perform in the Six Chair Challenge. This is all before the competition really heats up and culminates with the live shows later in the year.Expect outstanding vocals and sensational performances, as the judges and contestants go all out in a bid to be crowned The X Factor Champion 2018.

The search for a new music superstar continues with the second of the Auditions shows

The search for a new music superstar continues as The X Factor returns to ITV. Heralding the start of a new era for the nation's most talked about entertainment show, is a brand-new panel with Robbie Williams, Ayda Williams and Louis Tomlinson joining music mogul Simon Cowell as judges.

The search for a new music superstar continues as The X Factor returns to ITV. Heralding the start of a new era for the nation's most talked about entertainment show, is a brand-new panel with Robbie Williams, Ayda Williams and Louis Tomlinson joining music mogul Simon Cowell as judges.

The SSE Arena Wembley is the location as the audition rounds continue in the talent contest, hosted by Dermot O'Leary. Judges Robbie Williams, Ayda Williams, Louis Tomlinson and Simon Cowell decide who goes through to the Six Chair Challenge, before the competition really heats up later in the year with the live shows.

The search for a new music superstar heats up as the auditions continue at the SSE Arena.

The search for a new music superstar heats up as the auditions continue. Judges Robbie Williams, Ayda Williams, Louis Tomlinson and Simon Cowell audition more hopefuls at the SSE Arena in Wembley. They are joined by Dermot O'Leary, who will be on hand to guide viewers and contestants alike through their X Factor journey, providing them with a word of advice or a much-needed hug as the contestants perform in front of the judging panel.

The search for a new music superstar heats up as the auditions continue. Judges Robbie Williams, Ayda Williams, Louis Tomlinson and Simon Cowell audition more hopefuls at the SSE Arena in Wembley. They are joined by Dermot O'Leary, who will be on hand to guide viewers and contestants alike through their X Factor journey, providing them with a word of advice or a much-needed hug as the contestants perform in front of the judging panel.

The competition reaches a new level as the dramatic Six Chair Challenge returns, promising some amazing performances alongside some agonising decisions for the judges, as they must each decide on the final six acts they will take through to the Judges' House round.

In the second of three special Six Chair Challenge episodes, the stakes are high as the acts perform individually and their judge then has to decide, there and then in front of the audience, if they want the act to take one of the six seats on stage - each one representing a place at Judges' Houses.

Dermot O'Leary hosts the third and final Six Chair Challenge episode, in which the acts perform individually before the judges choose who will be selected for the next stage.

The live shows draw closer for the remaining 24 acts as they jet off to the Judges' Houses stage, in a bid to land a coveted place in the live shows. Offering a glimpse into the jetset lifestyle that the winner could have, the contestants travel to glamorous destinations across the world, and with just one more chance to impress their mentor, each act will be hoping to convince them that they have the star quality required to reach the live shows.

The remaining 24 acts travel to glamorous destinations across the world and have just one more chance to impress their mentors as the live shows draw tantalisingly closer. Each of the regular judges will be joined by a guest who knows all about what it takes to make it in the industry, to help them decide which of the contestants make the cut

Dermot O'Leary presents the third episode of the Judges' Houses phase, which sees the contestants jetting off to glamorous locations around the world. Once there, they must impress their individual mentor and a special guest judge to prove they are worthy of winning a place in the live shows.

The X Factor returns this weekend with the start of the anticipated live shows.

Each of the final 16 contestants will sing their hearts out live on stage with judges Simon Cowell, Louis Tomlinson, Robbie Williams and Ayda Williams taking their seats behind the judges' desk to battle it out with their contestants in the hope of impressing the audience at home.

Dermot O'Leary hosts the second of the live shows. The 16 acts selected from the auditions will perform to impress judges Simon Cowell, Louis Tomlinson, Robbie Williams and Ayda Williams - as well as the viewing public at home. This year, Simon will be coaching the Girls, Louis has the Boys, Robbie will take on the Groups and Ayda has the Overs

The X Factor live shows continue with each of the remaining contestants taking to the stage in the hope of impressing the audience at home while judges Simon Cowell, Louis Tomlinson, Robbie Williams and Ayda Williams take their seats on the panel.

The X Factor live shows continue with each of the remaining contestants taking to the stage in the hope of impressing the audience at home while judges Simon Cowell, Louis Tomlinson, Robbie Williams and Ayda Williams take their seats on the panel.

Dermot O'Leary hosts the third week of the singing contest's live shows, with the remaining acts keen to impress the judges as well as the viewers who will be casting votes for their favourite - with tomorrow night's results show revealing which acts have proved a hit and who will be leaving the contest this week. This year, Simon Cowell is in charge of the Girls, Louis Tomlinson has the Boys, Ayda Williams has the Overs, and Robbie Williams puts his Take That background to good use in coaching the Groups.

Dermot O'Leary introduces the results from the third week of the live shows, and reveals which acts have made the best impression on both judges Simon Cowell, Louis Tomlinson, Robbie Williams and Ayda Williams, and the viewing public. Plus, a musical performance from a special guest star.

Dermot O'Leary hosts the fourth week of live shows. The remaining 14 acts will be keen to impress judges Simon Cowell, Louis Tomlinson, Ayda Williams and Nile Rodgers - still filling in for the absent Robbie Williams - as well as the viewing public - and escape elimination in tomorrow night's results show.

Dermot O'Leary introduces the results from the fourth week of the live shows, and reveals which acts have made the best impression on both judges Simon Cowell, Louis Tomlinson, Nile Rodgers and Ayda Williams, and the viewing public. Plus, a musical performance from a special guest star.

Dermot O'Leary hosts the fifth week of live shows, on the Big Band theme. The remaining acts will be keen to impress judges Simon Cowell, Louis Tomlinson and Ayda Williams - as well as the viewing public - and escape elimination in tomorrow night's results show, after Giovanni Spano departed last week. Ayda's husband and Groups mentor Robbie Williams is due to return to the judging panel next week, having missed several recent shows due to touring commitments in South America, so tonight will see a guest stepping into the former Take That star's shoes once again.

Dermot O'Leary introduces the results from the fifth week of the live shows, and reveals which acts have made the best impression on the viewing public as wells as Simon Cowell, Louis Tomlinson, Ayda Williams, and this week's special guest judge. Plus, a musical performance from a special guest star.

The X Factor live shows continue with each of the remaining contestants taking to the stage in the hope of impressing the audience at home and the panel of judges.

The remaining contestants discover who has done enough to earn their place in the final, and who faces the heartbreak of being sent home at the final hurdle. Plus, a chart-topping act joins in the fun and puts on a show-stopping performance. Dermot O'Leary hosts.

It's The X Factor Final, and the remaining contestants take to the stage in the hope of impressing the audience at home and the panel of judges one last time.

The final results show features a chart-topping act performing, before the winner of this year's competition is announced.