LONDON: Cheryl Cole has revealed that she finds her fellow X Factor judge "nasty, rude and annoying".

The Girls Aloud star spoke about the increased "friction" between her and the music mogul, adding she finds it tough to keep a lid on her temper when the cameras roll.

"There is tension between us on the actual Saturday night, when he starts getting annoying and saying nasty things," the Daily Star quoted her telling BBC News.

"It gets really heated backstage, and quite competitive.

"I don't feel like I'm a competitive person. I feel like the best person should win The X Factor, whether they're in my category or not. But he's so competitive and so rude sometimes that I find myself getting caught up in it.

"Honestly, he's really annoying. Really annoying," she added.