Simon Cowell admits he's missing ex-judge Louis Walsh on The X Factor – and jokes he can come back as a contestant in the 'over 80s' category

The Irish music manager quit the show ahead of this current series, and Simon admits things aren't the same without his friend by his side…

Read More Simon Cowell admits he's missing ex-judge Louis Walsh on The X Factor – and jokes he can come back as a contestant in the 'over 80s' category