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)
Louis Walsh Self - Judge Self - Judge See fewer	Spin the Bottle (2003)
Katy Perry Self - Guest Judge Self - Guest Judge See fewer	The Smurfs (2011)
Annastasia Baker Self - Contestant Self - Contestant See fewer	The X Factor UK (2004)
Sugar Bullet Themselves - Contestants Themselves - Contestants See fewer	The X Factor UK (2004)
Mary Byrne Self - Contestant Self - Contestant See fewer	Never Mind the Buzzcocks (1996)
Matt Cardle Self - Contestant Self - Contestant See fewer	Fast Girls (2012)
Stephen Concannon Self - Contestant Self - Contestant See fewer	The X Factor UK (2004)
Rebecca Creighton Self - Contestant Self - Contestant See fewer	The X Factor UK (2004)
Temple Fire Themselves - Auditionees Themselves - Auditionees See fewer	The X Factor UK (2004)
Husstle Themselves - Contestants Themselves - Contestants See fewer	The X Factor UK (2004)
Michael Lewis Self - Auditionee Self - Auditionee See fewer	TV Burp (2001)
Sadbh O'Donnell Self - Contestant Self - Contestant See fewer	The X Factor UK (2004)
Princes & Rogues Themselves - Contestants Themselves - Contestants See fewer	The X Factor UK (2004)
The Reason Themselves - Contestants Themselves - Contestants See fewer	The X Factor UK (2004)
Seven Themselves - Contestants Themselves - Contestants See fewer	Twiztid: Boogieman (2015)
Desi Valentine Backing vocalist Backing vocalist See fewer	The Search for John Gissing (2001)