On tonight's episode of 'The X Factor', judge and mentor Louis Walsh will reveal that he's not happy with the category that the show's producers have given him, the 'Over 28s'.

Although Walsh welcomes the contestants to his home in Shannan on tonight's show, he tells them, "I'm going to be honest, when I was given this category, I was so disappointed." 

Tonight's episode on ITV1 sees the return of Sharon Osbourne, as she helps Walsh pick his final three contestants.

The other categories are: 'The Girls' to be judged by Cheryl Cole; 'The Groups' by Simon Cowell; and 'The Boys' by Dannii Minogue. 

Watch a clip of last week's show below, where the judges discovered who they are set to mentor.