The X Factor

Kate Thornton

Self - Presenter

Dermot O'Leary

Self - Presenter

Caroline Flack

Self - Presenter

Olly Murs

Self - Presenter

Simon Cowell

Self - Judge

Sharon Osbourne

Self - Judge

Louis Walsh

Self - Judge

Dannii Minogue

Self - Judge

Gary Barlow

Self - Judge

Kelly Rowland

Self - Judge

Nick Grimshaw

Self - Judge

Rita Ora

Self - Judge

Ayda Field

Self - Judge

Louis Tomlinson

Self - Judge

Nicole Scherzinger

Self - Judge

Robbie Williams

Self, Self - Special Guest, Self - Judge

Céline Dion

Self - Special Guest

Brian Friedman

Self - Creative Director

Julio Iglesias

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

Kian Egan

Self - Judges' Expert

Michael Underwood

Self - OB Presenter

Britney Spears

Self - Special Guest

Gloria Estefan

Self - Performer

Alexandra Burke

Self

Will Young

Self - Special Guest

Jeff Brazier

Self - OB Presenter

Jason Donovan

Self - Special Guest

Kylie Minogue

Self - Special Guest

Myleene Klass

Self - OB Presenter

Beyoncé

Self

Katherine Jenkins

Self - Special Guest

Harry Styles

Self - Contestant

Leona Lewis

Self - Special Guest, Self - Contestant

Zayn Malik

Self - Contestant

Liam Payne

Self - Contestant

Usher

Self - Special Guest

Katy Perry

Self - Special Guest

Ronan Keating

Self - Guest Judge

Michelle Thorne

Self

Mary Byrne

Self - Contestant

Niall Horan

Self - Contestant

Michael Bublé

Self - Special Guest

Dalton Harris

Self - Contestant

Brendan Murray

Self - Contestant

Luke Johnson

Self - Dancer

Shayne Ward

Self

Brenda Edwards

Self

Chico Slimani

Self