TV
The former Take That star will perform the world exclusive of comeback single 'Bodies' on the programme, his official website reports.
Williams said: "I'm a huge fan of The X Factor. Of course I'll be watching every week, just like everyone else."
Meanwhile, the singer is said to be very impressed with one auditionee who has already appeared on this year's series.
According to The Sun, Williams said: "There's this one guy on The X Factor who is amazing. I think he could take my place. I've got my eye on him. He's dead."
Tube Talk
'Skins': The most violent episode ever?Tube Talk previews this week's violent episode of the E4 drama Skins.
TV Interviews
'Celebrity Apprentice' Debbie Gibson Q&ADebbie Gibson opens up about her Celebrity Apprentice experience.
Reality Bites
Does Simon Cowell have new SuBo?: VideoWatch a clip of Jonathan Antoine, who is tipped for success on BGT.
TV Ratings
Judi Dench draws 4.1m on 'Graham Norton'ITV1 pips BBC One to the highest primetime audience share.
