Name	Known for
Giang Brothers Themselves - Contestants Themselves - Contestants See fewer	It's Showtime! Das Battle der Besten (2017)
Simon Cowell Self - Judge Self - Judge See fewer	Scary Movie 3 (2003)
Dennis DeMille Self - Contestant (as Demille & Muoneke) Self - Contestant (as Demille & Muoneke) See fewer	Olaya
Alesha Dixon Self - Judge Self - Judge See fewer	Catwoman (2004)
Declan Donnelly Self - Presenter Self - Presenter See fewer	Love Actually (2003)
Amanda Holden Self - Judge Self - Judge See fewer	Wild at Heart (2006)
Luke Johnson Dancer Dancer See fewer	Children in Need (2015)
Ray Kelly Self - Contestant (as Father Ray Kelly) Self - Contestant (as Father Ray Kelly) See fewer	Dancing with the Stars (2017)
Micky P. Kerr Self - Contestant (as Micky P Kerr) Self - Contestant (as Micky P Kerr) See fewer	An Actor's Life (Less Ordinary) (2017)
Lexie & Christopher Themselves - Contestants Themselves - Contestants See fewer	Britain's Got Talent (2007)
Sarah Llewellyn Self - Contestant Self - Contestant See fewer	Angels Fallen (2020)
Mandy Muden Self - Contestant Self - Contestant See fewer	Dick and Dom's Funny Business (2011)
Demille & Muoneke Themselves - Contestants Themselves - Contestants See fewer	Britain's Got Talent (2007)
Marvin Muoneke Self - Contestant (as Demille & Muoneke) Self - Contestant (as Demille & Muoneke) See fewer	Central Tonight (2006)
Bring It North Themselves - Contestants Themselves - Contestants See fewer	Britain's Got Talent (2007)
David Walliams Self - Judge Self - Judge See fewer	Little Britain (2003)
Robbie Williams Self - Audience Member (uncredited) Self - Audience Member (uncredited) See fewer	Coronation Street (1960)