Robbie Williams and David Walliams choose four acts for X Factor live shows

David Walliams and Robbie Williams in Los Angeles for the Judges Houses stage on the ITV1 talent show, The X Factor. (SYCO/THAMES TV)
David Walliams and Robbie Williams in Los Angeles for the Judges Houses stage on the ITV1 talent show, The X Factor. (SYCO/THAMES TV)