Keira Knightley has said it was great fun working opposite Johnny Depp in the Pirates of the Caribbean series - but hard work too.

She said recently: “The funny thing about Pirates Of The Caribbean, a film with lots of special effects, is that I count Johnny Depp as the biggest special effect of all. The first thing I had to learn when acting with Johnny was not to look at him. Ignore him at all costs.”

“He wouldn’t do the full Jack Sparrow if the camera was on you. But as soon as it turned around you couldn’t do any off-camera lines because you’d be laughing too much.”

“There will be a lot of out-takes of everybody laughing in the middle of a scene. I remember the crew with tears running down their faces.”

She added that working with Orlando Bloom on the films was great too: “I am lucky to have worked with two such nice guys. We’ve become very good friends.”

But given she’s had to kiss both Orlando and Johnny on screen, she gets a lot of reactions of jealousy from other women: “Women look at me as if they want to kill me. And then when they don’t kill me they say through gritted teeth, ‘Lucky you’.”