The X Factor

Simon Cowell returns to the judging panel the eleventh season.

Simon Cowell returns to the judging panel in the eleven season.

Simon Cowell returns to the judging panel in the eleven season; the room auditions continue; more hopefuls face the judges head on.

Simon Cowell returns to the judging panel in the eleven season.

Simon Cowell returns to the judging panel in the eleventh season; the first round of arena auditions begin.

Simon Cowell returns to the judging panel; another batch of singers and groups face the judges and a packed Wembley arena.

Simon Cowell returns to the judging panel; another batch of singers, duos and bands move forward.

Simon Cowell returns to the judging panel; another batch of musicians face the judges.

Simon Cowell returns to the judging panel; the remaining performers fight for a spot at the judges' houses; the return of the six-chair challenge.

Simon Cowell returns to the judging panel; the remaining acts fight for a place in the final 24.

Simon Cowell returns to the judging panel; the judges must determine who to take with them as bootcamp concludes.

Simon Cowell returns to the judging panel; tensions mount as performers reach the judges' houses stage.

The 24 acts that made it through boot camp travel to four destinations in the hopes of placing in the final 12; mentors are joined by guests to help them select the best three acts for their category.

The last group of hopefuls perform at the judges' houses for a place in the final 12; only three acts will be selected for each category.

The finalists perform classic songs that have made it to the top of the charts in the first of the live show performances.

The thrill of live performances is quickly followed by the first elimination.

Contestants perform hit songs from the 80's on the second live show.

Contestants find out who has the lowest number of votes.

Remaining acts perform selections from classic movie moments.

Remaining acts anticipate the next elimination; there is a sing-off before another contestant leaves the show.

The remaining contestants get into the spirit for Halloween-themed performances.

The remaining acts find out who is safe and who has scored the lowest number of votes.

There are big shoes to fill when the nine remaining contestants perform music from Michael Jackson's and Queen's catalogues.

Another contestant is eliminated.

The remaining acts perform; Big Band week returns.

Another contestant is eliminated.

The finalists perform live.

Another heartbreaking elimination.

The remaining acts perform live.

Another elimination is announced as the competition narrows.

Last year's winner Sam Bailey and Idina Menzel perform.

Dermot O'Leary hosts as another singer is eliminated.

The season comes to a close.

The last two contestants duke it out for a record contract.