Aidan Cook
From Tardis Wiki, the free Doctor Who reference
Aidan Cook was the actor who portrayed the Mummy in the Series 7 Doctor Who episode, The Rings of Akhaten and The Crooked Man in the Series 7 Doctor Who episode, Hide'.
Cook previously wore prosthetic make-up when appearing as the Two-Headed Shop Owner in the fantasy comic book movie, Hellboy II: The Golden Army.