The X Factor (British TV series) series 12

The X Factor (British TV series) series 12 was the twelfth series of the British television music competition The X Factor, which aired from 29 August to 12 December 2015 on ITV. The series saw changes to the judging panel, with Nick Grimshaw and Rita Ora replacing Louis Walsh and Mel B. Simon Cowell remained as a judge, and Cheryl Fernandez-Versini returned for her fifth series.

Olly Murs and Caroline Flack replaced Dermot O'Leary as the show's presenters.

The winner of the series was Louisa Johnson, mentored by Rita Ora, making her the youngest winner of the show at the time. Reggie 'n' Bollie finished as runners-up, mentored by Cheryl Fernandez-Versini. Che Chesterman finished in third place, mentored by Nick Grimshaw.

Key events and moments throughout the series included the Bootcamp and Six Chair Challenge rounds, where contestants battled for a place in the Judges' Houses stage. The live shows featured weekly themes and performances from guest artists. Notable contestants besides the finalists included Lauren Murray, Anton Stephans, and 4th Impact.

The series received mixed reviews, with some criticism directed towards the presenting duo and some of the judging decisions. However, it maintained a strong viewership throughout its run.

Following the conclusion of the series, Johnson released her winner's single, a cover of Bob Dylan's "Forever Young."