Question: who are the judges on x factor uk 2015
Answer: 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.