Dominic Cooper tried to seduce Dame Helen Mirren when they worked on a play together.

The 33-year-old actor starred with Helen, 65, in 'Phedre' two years ago and although Dominic - who has previously dated 'Mamma Mia' co-star Amanda Seyfried - attempted to woo Helen, he admitted she failed to succumb to his charms.

He told Live magazine: "Helen's incredibly hot. I tried so hard to make her fancy me, but I just knew immediately that there was nothing. She didn't fancy me at all."

Getting close to his gorgeous female co-stars is one of the best things about Dominic's job and he revealed spending the day in bed with Keira Knightley on the set of 'The Duchess' was a "really nice" experience.

He said: "It's not been bad. People always complain about love scenes saying it's awkward with so many people around. The fact is that it's lovely lying in bed with a beautiful woman. Being with a naked Keira Knightley is a really nice way to spend the day."

However, Dominic is wary of getting typecast as a love interest, explaining: "It's a very easy category to fall into. Some people I'm sure love doing that, but it's kind of mind-numbing. Beyond the vanity of watching yourself be the love interest in a reasonably good film, it doesn't interest me."