Name	Known for
Dermot O'Leary Self - Presenter Self - Presenter See fewer	Inside No. 9 (2014)
Gary Barlow Self - Judge Self - Judge See fewer	Kingsman: The Secret Service (2014)
Sharon Osbourne Self - Judge Self - Judge See fewer	It's a Boy Girl Thing (2006)
Nicole Scherzinger Self - Judge Self - Judge See fewer	Moana (I) (2016)
Louis Walsh Self - Judge Self - Judge See fewer	Spin the Bottle (2003)
Abi Alton Self - Performer Self - Performer See fewer	The X Factor UK (2004)
Sam Bailey Self - Contestant Self - Contestant See fewer	Sam Bailey: Skyscraper (2013)
Hannah Barrett Self - Performer Self - Performer See fewer	The X Factor UK (2004)
Marvin Brown Dancer - katy perry Dancer - katy perry See fewer	3-Second Rule (2021)
Sam Callahan Self - Performer Self - Performer See fewer	Tricked (2013)
Rough Copy Themselves - Performers Themselves - Performers See fewer	Sunday Side Up (2013)
Miss Dynamix Themselves - Performers Themselves - Performers See fewer	The X Factor UK (2004)
Caroline Flack Self - Backstage Presenter Self - Backstage Presenter See fewer	Bo' Selecta! (2002)
Tamera Foster Self - Performer Self - Performer See fewer	Good Love (2021)
Luke Friend Self - Performer Self - Performer See fewer	Watchtower (2021)
Elton John Self - Special Guest Self - Special Guest See fewer	Kingsman: The Golden Circle (2017)
Kingsland Road Themselves - Performers Themselves - Performers See fewer	The X Factor UK (2004)
Nicholas McDonald Self - Contestant Self - Contestant See fewer	The X Factor UK (2004)
One Direction Themselves - Special Guests Themselves - Special Guests See fewer	One Direction: What Makes You Beautiful (2011)
Katy Perry Self - Special Guest Self - Special Guest See fewer	The Smurfs (2011)
Shelley Smith Self - Performer Self - Performer See fewer	The X Factor UK (2004)