Name	Known for
Dermot O'Leary Self - Presenter Self - Presenter See fewer	The X Factor UK (2004)
Gary Barlow Self - Judge Self - Judge See fewer	Kingsman: The Secret Service (2014)
Kelly Rowland Self - Judge Self - Judge See fewer	Freddy vs. Jason (2003)
Tulisa Self - Judge Self - Judge See fewer	Big Fat Gypsy Gangster (2011)
Louis Walsh Self - Judge Self - Judge See fewer	Spin the Bottle (2003)
One Direction Themselves - Special Guest Themselves - Special Guest See fewer	One Direction: What Makes You Beautiful (2011)
Lady Gaga Self - Special Guest Self - Special Guest See fewer	A Star Is Born (2018)
Peter Dickson Self - Voice Over (voice) Self - Voice Over (voice) See fewer	Harry Potter for Kinect (2012)
Little Mix Themselves - Contestants Themselves - Contestants See fewer	Little Mix feat. Nicki Minaj: Woman Like Me (2018)
Kimberley Edwards Self - Contestant (as Kitty Brucknell) Self - Contestant (as Kitty Brucknell) See fewer	Interference (I) (2005)
Misha Bryan Self - Contestant (as Misha B) Self - Contestant (as Misha B) See fewer	The X Factor UK (2004)
Janet Devlin Self - Contestant Self - Contestant See fewer	Songbird (III) (2018)
Amelia Lily Self - Contestant Self - Contestant See fewer	Amelia Lily: You Bring Me Joy (2012)
Craig Colton Self - Contestant Self - Contestant See fewer	The X Factor UK (2004)
Marcus Collins Self - Contestant Self - Contestant See fewer	Out of Time (II) (2020)