The 20-year-old, who has appeared in RockNRolla and Sweeney Todd, told the BBC news website that taking part in the vampire series was "very exciting".

"You're the first people I've told" he said. "Shooting has already started, and I'm going over in June."

The film, due for release in November, is the second adaptation from author Stephenie Meyer's Twilight series.

The role of Caius is key to the plot of New Moon. He forms part of the triumvirate leading the Italian based coven of vampires called the Volturi.

The second book in the series see the gang become a threat to lovers Bella and Edward.

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