David Bradley(IV)

One of three actors to play a supporting character on Doctor Who (2005) then go on to play The Doctor. He played Solomon in Dinosaurs on a Spaceship (2012) then played William Hartnell, the First Doctor in An Adventure in Space and Time (2013). The other two were Colin Baker in "Arc of Infinity" then the Sixth Doctor and Peter Capaldi in The Fires of Pompeii (2008) and then the Twelfth Doctor.

[on starring in An Adventure in Space and Time (2013)] When he asked if I would be interested, I almost bit his hand off! Mark [Mark Gatiss] has written such a wonderful script not only about the birth of a cultural phenomenon, but a moment in television's history. William Hartnell was one of the finest character actors of our time and as a fan I want to make sure that I do him justice. I'm so looking forward to getting started.