Keira Knightley could be on the verge of quitting acting, due to the pressure of fame.

The actress hates the intrusion of the media in her personal affairs, and has realised she may well have to change something if she is going to lead a normal life.

"The celebrity thing's completely crazy," she told Elle magazine. "I think I just have to move away or give it up altogether.

"I couldn't have kids in the situation I'm in now. But I could just do something else. That's probably what's going to happen. I made a decision very recently that I want a life instead."