Keira KnightleyKeira KnightleyRumours have been flying this week that Keira Knightley's already found herself a new man, in the shape of Bodyrockers musician Kaz James.

But now it looks like it's all a load of old bunkum.

The 20-year-old star, who recently split from model Jamie Dornan, set tongues wagging at the Pride And Prejudice premiere when she and Kaz arrived just minutes apart.

And Kaz, fresh from chart success with I Like The Way, wasted no time in telling people he was dating the actress.

But now Keira has hit back at the rumours, calling them "codswallop".

"I'm slightly surprised, because I've never met him in my life," she told the Daily Mail.

Kaz JamesKaz James"The first time I set eyes on him was in the newspaper.

"Now I hear he's telling people he's going out with me. It's not true, not one word of it."

Keira went on to brand the chart star a "sad loser" for telling people they were an item.

"Who does he think he is?" she said. "There are words I could suggest but they are rude."