Production of the special is now underway with show bosses promising “an action-packed, unmissable adventure.”
Frost, star of Spaced, The World’s End, and Cuban Fury, said: “I’m so thrilled to have been asked to guest in the Doctor Who Christmas Special, I’m such a fan of the show.
“The read-through was very difficult for me; I wanted to keep stuffing my fingers into my ears and scream ‘No spoilers!’ Every day on set I’ve had to silence my internal fan-boy squeals!”
He and Troughton will be Natalie Gumede (Coronation Street), Faye Marsay (Pride) and Nathan McMullen (Misfits).
Steven Moffat, lead writer and executive producer, says: “Frost at Christmas – it just makes sense! I worked with Nick on the Tintin movie many years ago and it’s a real pleasure to lure him back to television for a ride on the TARDIS.”