<P> The X Factor is a British television music competition to find new singing talent . The twelfth series began airing on ITV on 29 August 2015 and ended on 13 December 2015 . The judges were Simon Cowell , Cheryl Fernandez - Versini , who returned for their respective ninth and fifth series as judges , series 9 guest judge and former The Voice UK coach Rita Ora , and BBC Radio 1 DJ Nick Grimshaw , with Grimshaw and Ora replacing Louis Walsh , the only judge who had been on the show from its inception in 2004 , and Mel B. It was presented by Caroline Flack and Olly Murs , who had both previously co-presented spin - off show The Xtra Factor on ITV2 and replaced Dermot O'Leary , who left after eight series . Rochelle Humes and Melvin Odoom presented The Xtra Factor , replacing Sarah - Jane Crawford . Louisa Johnson was announced as the winner on 13 December 2015 , making Ora the winning mentor . </P>
<P> The X Factor is a British television music competition to find new singing talent . The twelfth series began airing on ITV on 29 August 2015 and ended on 13 December 2015 . The judges were Simon Cowell , Cheryl Fernandez - Versini , who returned for their respective ninth and fifth series as judges , series 9 guest judge and former The Voice UK coach Rita Ora , and BBC Radio 1 DJ Nick Grimshaw , with Grimshaw and Ora replacing Louis Walsh , the only judge who had been on the show from its inception in 2004 , and Mel B. It was presented by Caroline Flack and Olly Murs , who had both previously co-presented spin - off show The Xtra Factor on ITV2 and replaced Dermot O'Leary , who left after eight series . Rochelle Humes and Melvin Odoom presented The Xtra Factor , replacing Sarah - Jane Crawford . Louisa Johnson was announced as the winner on 13 December 2015 , making Ora the winning mentor . </P>
who are the judges on x factor uk 2015
who are the judges on x factor uk 2015
Simon Cowell Cheryl Fernandez - Versini Rita Ora Nick Grimshaw
Simon Cowell Cheryl Fernandez - Versini Rita Ora Nick Grimshaw