The show's creator and Syco boss left the UK X Factor last year and has not featured in the 2011 live shows at all, due to commitments to the new US series on Fox.
Simon Cowell - The X Factor boss and record executive celebrates his 52nd birthday on Friday.
Cowell is holding a party in LA at the weekend, which will be streaming footage of the four-hour UK show's finale for guests. He has also apparently been lined up to speak via satellite on The Xtra Factor.
The music and TV mogul is still a producer on the ITV1 programme and has spoken to the UK contestants via Skype during the series, offering constructive criticism and advice on their performances.
At yesterday's X Factor finalists' press conference at Wembley Arena, Louis Walsh and Gary Barlow seemed unaware that Cowell would have any involvement in the final, suggesting that he was too busy with the US version.
The X Factor final kicks off on Saturday (December 10) at 8pm on ITV1. Marcus Collins, Amelia Lily and Little Mix are fighting it out for the chance to land a Syco record contract and a Christmas single.
