Name	Known for
Dermot O'Leary Self - Presenter Self - Presenter See fewer	The X Factor UK (2004)
Simon Cowell Self - Judge Self - Judge See fewer	Scary Movie 3 (2003)
Cheryl Self - Judge (as Cheryl Cole) Self - Judge (as Cheryl Cole) See fewer	What to Expect When You're Expecting (2012)
Dannii Minogue Self - Judge Self - Judge See fewer	Home and Away (1988)
Louis Walsh Self - Judge Self - Judge See fewer	Spin the Bottle (2003)
Nicole Scherzinger Self - Special Guest Self - Special Guest See fewer	Moana (I) (2016)
Justin Bieber Self - Special Guest Self - Special Guest See fewer	Justin Bieber: Never Say Never (2011)
The Wanted Themselves - Special Guests Themselves - Special Guests See fewer	Ice Age: Continental Drift (2012)
Mary Byrne Self - Contestant Self - Contestant See fewer	Celebrity Bainisteoir (2008)
Matt Cardle Self - Contestant Self - Contestant See fewer	Fast Girls (2012)
Rebecca Ferguson Self - Contestant Self - Contestant See fewer	Everything Is Love (2014)
Wagner Fiuza-Carrilho Self - Contestant (as Wagner) Self - Contestant (as Wagner) See fewer	Yesterday, Today & the Day Before (2021)
Cher Lloyd Self - Contestant Self - Contestant See fewer	Identity Thief (2013)
Killian Lyrik Self (Choir) Self (Choir) See fewer	Don't Stop Believing (2010)
One Direction Themselves - Contestants Themselves - Contestants See fewer	One Direction: What Makes You Beautiful (2011)
Desi Valentine Backing vocalist Backing vocalist See fewer	The Search for John Gissing (2001)
Katie Waissel Self - Contestant Self - Contestant See fewer	Celebrity Bedlam (2012)