According to NewMoonMovie:
Michael Sheen, who plays Aro of the Volturi in New Moon, has finished filming his parts in Vancouver. He is now headed to London, according to his recent Tweets. He should be headed to Italy at the end of the month.
I just love his tweets! (that's the right word, right?) He's so cool by keeping us up to date on the happenings of "New Moon"!