X Factor judge Cheryl Cole has said Simon Cowell is "annoying" and can be "so rude sometimes."

The 26-year-old is a judge on the hit ITV show along with Simon, 50, and in interview with the BBC, she said that there is tension between the two of them on the live Saturday night shows.

"There is on the actual Saturday night, when he starts getting annoying and saying nasty things. It gets quite heated backstage, and quite competitive.

But he's so competitive and so rude sometimes that I find myself getting caught up in it."