Simon Fisher-Becker
From Tardis Wiki, the free Doctor Who reference
Simon Fisher-Becker played Dorium in the Doctor Who story The Pandorica Opens, A Good Man Goes to War. and then again in The Wedding of River Song.
As well as his role in Doctor Who, he is known for appearing in the popular Harry Potter film franchise, albeit briefly, and for playing the Fat Controller from Thomas the Tank Engine for ten years.
