The X Factor
Nick Grimshaw and Rita Ora

Created by Simon Cowell in 2004, The X Factor is sometimes controversial, often criticised, and frequently entertaining. Its new judging panel for 2015 comprises Cowell, Cheryl Fernandez-Versini, Voice UK series 4 coach Rita Ora and Radio 1 breakfast show host Nick Grimshaw.

Aspiring musicians are put through a succession of audition rounds leading up to a series of large-scale live shows on primetime TV. Previous winners include Leona Lewis, Alexandra Burke, Matt Cardle, Little Mix, James Arthur and 2014 champion Ben Haenow.

Numerous soloists and groups who didn't win the show - including One Direction, JLS and Rebecca Ferguson - have all gone on to varying degrees of national and international success, with Olly Murs even becoming the show's new host for 2015 alongside Caroline Flack.

The competition's more outrageous and flamboyant acts - from energetic twin brothers Jedward to singer-turned-TV presenter Rylan Clark - have also attracted attention over The X Factor's 11 years on TV screens. The show has retained mainstream popularity and a strong overnight ratings performance, enjoying a healthy ratings rivalry with the BBC's Strictly Come Dancing.
The X Factor Top Story Louis Walsh makes a sweeping cameo in the new X Factor trailer The former judge makes a blink-and-you-miss-it cameo in the new teaser for the series.
Expect the unexpected as Simon, Rita, Nick and Cheryl go in search of a new star - and another familiar face returns... The first X Factor trailer is finally here The music mogul also enthuses over new judges Nick Grimshaw and Rita Ora. Cowell wasn't happy with last year's X Factor "Sometimes I want to move away from him but he won't let us." Cheryl: 'Simon won't let me move seats' "It's always been a side of the work that's really interested me and The X Factor in particular." Louis Tomlinson would love to judge X Factor Discover X Factor's secret to success in the first promo for this year's series, airing later tonight. First look at new X Factor 2015 trailer Cowell Junior delays auditions for a ride with his dad in a golf buggy. Eric Cowell arrives at X Factor Boot Camp Cheryl is comparing the size of her head to an artichoke, which is totally normal. X Factor: Has Boot Camp driven the judges mad? Could a Boombastic Angel be the next voice of The X Factor? X Factor: Grimmy wants Shaggy on the show Peter Dickson is irreplaceable, and yet he must be replaced. 8 stars who could be new voice of X Factor It's the tweet we'd all been waiting for. Rachel Adedeji says bye to Peter Dickson No more RAAAAAAACHEL ADEDEJIIIII. Voiceover Man Peter Dickson has left The X Factor We've gathered together everything we've heard about the new series of The X Factor. The X Factor: Everything we know so far Rita Ora complains about people comparing her to fellow judge Cheryl Fernandez-Versini. The X Factor: Rita Ora's feeling nervous No, we're not going to make a Sex Factor joke. Not us. Nope. X Factor: Porn star dropped from auditions The One Direction singer says the BBC Radio 1 DJ "knows so much about music". Harry Styles on X Factor's 'cool' Grimshaw Rumours suggest that Cheryl will be joined by a familiar face at Judges' Houses. X Factor: Will Dannii Minogue be back? It's not just the judges who are different this time around, you know. The X Factor: 8 big changes this series The Xtra Factor presenter smoulders in her latest boho-inspired range. Rochelle Humes exudes '70s cool for fashion range The distraught young singer performed at Mark Wright and Michelle Keegan's wedding. X Factor hopeful dropped before Boot Camp Nick Grimshaw and Simon Cowell have bonded over one big thing - mocking Cheryl. X Factor: Grimmy and Simon's big bromance Acts complain that they got a yes at their audition - but not a pass to Boot Camp. X Factor ditches acts before Boot Camp James Graham talks about the rise and fall of eight-piece boyband Stereo Kicks. Stereo Kicks James: I blame Louis entirely Punches, future stars and coming up from Camden Town - it's all in the X Factor auditions. X Factor: 13 brilliant and bonkers auditions How are new judges Rita and Nick doing? What are Olly and Caroline like? We went to Wembley to find out. 14 things we learned at X Factor auditions Cheryl is thrilled when an act that she let go in a past series returns for another audition. The X Factor: Cheryl faces her biggest regret Singer speaks about proving people wrong by winning rave reviews for his turn in Memphis. Matt Cardle talks post-X Factor doubters X Factor presenters are reportedly poised to anchor proceedings from the studio this year. Olly and Caroline missing Judges' Houses? Jean-Bernard Versini tells a certain "Jimmy the Grym" to sleep with one eye open. Cheryl's husband to Grimshaw: 'Her ass is mine' The judges raved about one act at Wembley... so what was the problem? The X Factor: This audition was heartbreaking The singer had a pre-planned gig but is returning for auditions today. Ora misses X Factor for underwear show The X Factor judge is taking precautions when it comes to his beloved Yorkies. Simon Cowell orders helmets for pet dogs Cheryl strikes out on a Segway. But remember, she's 'Only Human'. Don't ever let Cheryl on a Segway again "I like your hips, I like your lips... I'd like to give you one." Simon Cowell gets an X Factor snog X Factor judge shared a picture of herself with a young Grimmy back in 2003. Can you believe this is Nick Grimshaw? The 'You're Beautiful' legend is joining Dannii Minogue, Chris Isaak and Guy Sebastian on the Australian version of the show. Watch James Blunt as an X Factor judge The X Factor judge insists she's "happy and healthy" and criticism won't get her down. Cheryl on weight loss criticism: 'I'm tough' Even Cheryl Fernandez-Versini was lost for words. Simon Cowell gets fruity on The X Factor The former X Factor finalist claims she warned Rita Ora about Cheryl. Katie Waissel calls Cheryl a 'prick' Simon Cowell enjoyed making fun of his fellow judge for her "embarrassing" injury. Cheryl burns her foot on hair tongs "Rita's young and letting her inhibitions go. She is who she is," Cheryl says. Rita Ora is planning an X Factor nip slip