Louis Walsh
Self - Judge
Simon Cowell
Self - Judge
Dermot O'Leary
Self - Presenter
Sharon Osbourne
Self - Judge
Nicole Scherzinger
Self - Judge
Dannii Minogue
Self - Judge
Gary Barlow
Self - Judge
Kate Thornton
Self - Presenter
Kelly Rowland
Self - Judge
Robbie Williams
Self - Judge
Caroline Flack
Self - Presenter
Olly Murs
Self - Presenter
Nick Grimshaw
Self - Judge
Rita Ora
Self - Judge
Ayda Field
Self - Judge
Louis Tomlinson
Self - Judge
Dalton Harris
Self - Contestant
Brendan Murray
Self - Contestant
Brian Friedman
Self - Creative Director
Alexandra Burke
Self
Jeff Brazier
Self - OB Presenter
Myleene Klass
Self - OB Presenter
Harry Styles
Self - Contestant
Leona Lewis
Self - Special Guest
Michael Bublé
Self - Special Guest
Luke Johnson
Self - Dancer
Céline Dion
Self - Special Guest
Rod Stewart
Self - Special Guest
Lionel Richie
Self - Special Guest
Mariah Carey
Self - Special Guest
Barry Manilow
Self - Special Guest
Tony Bennett
Self - Special Guest
Will Young
Self - Special Guest
Kylie Minogue
Self - Special Guest
Beyoncé
Self
Zayn Malik
Self - Contestant
Liam Payne
Self - Contestant
Michelle Thorne
Self
Julio Iglesias
Self - Special Guest
Kian Egan
Self - Judges' Expert
