Last three X Factor contestants go head-to-head as series final begins

Robbie Williams, Ayda Williams, Louis Tomlinson and Simon Cowell will decide who wins this series of the X Factor (Tom Dymond/Syco/Thames TV)
Robbie Williams, Ayda Williams, Louis Tomlinson and Simon Cowell will decide who wins this series of the X Factor (Tom Dymond/Syco/Thames TV)