Name	Known for
Dermot O'Leary Self - Presenter Self - Presenter See fewer	The X Factor UK (2004)
Louis Walsh Self - Judge Self - Judge See fewer	Spin the Bottle (2003)
Mel B Self - Judge (as Melanie Brown) Self - Judge (as Melanie Brown) See fewer	Spice World (1997)
Cheryl Self - Judge (as Cheryl Cole) Self - Judge (as Cheryl Cole) See fewer	What to Expect When You're Expecting (2012)
Simon Cowell Self - Judge Self - Judge See fewer	Scary Movie 3 (2003)
Peter Dickson Self (voice) Self (voice) See fewer	Harry Potter for Kinect (2012)
Fifth Harmony Themselves - Special Guest Themselves - Special Guest See fewer	Fifth Harmony feat. Ty Dolla Sign: Work from Home (2016)
Sam Bailey Self - Special Guest Self - Special Guest See fewer	Sam Bailey: Skyscraper (2013)
Idina Menzel Self - Special Guest Self - Special Guest See fewer	Frozen (I) (2013)
Michael Bublé Self - Special Guest Self - Special Guest See fewer	Spider-Man 2 (2004)
Fleur East Self - Contestant Self - Contestant See fewer	Second Act (2018)
Andrea Faustini Self - Contestant Self - Contestant See fewer	Mr. Happiness (2017)
Ben Haenow Self - Contestant Self - Contestant See fewer	Ben Haenow & Kelly Carkson: Second Hand Heart (2015)
Lauren Platt Self - Contestant Self - Contestant See fewer	The X Factor UK (2004)
Suzannah Ruth Dancer Dancer See fewer	All Stars (2013)