A BBC America press release today said:
David Bradley (Harry Potter) is set to play the first ever Doctor, the iconic William Hartnell, in the drama written by Mark Gatiss (Sherlock, Doctor Who), who will also serve as executive producer alongside Steven Moffat (Doctor Who, Sherlock) and Caroline Skinner (Doctor Who, The Fades). An Adventure in Space and Time (1x90) is a co-production between BBC Cymru Wales and BBC AMERICA. The drama will premiere later this year on BBC AMERICA.
The BBC’s Head of Drama Sydney Newman, credited with the creation of the show, will be portrayed by Brian Cox (The Bourne Supremacy, Bourne Identity) and the producer, Verity Lambert, by Jessica Raine (Call the Midwife). The director of the first ever episode An Unearthly Child, Waris Hussein, will be played by Sacha Dhawan (History Boys, Last Tango In Halifax).
Mark Gatiss, writer and executive producer said: “What a cast! I'm utterly delighted that everyone's favorite Time Lord will be in such brilliant and stellar company. We have a terrific team who can't wait to tell the fascinating and surprising story of how the Doctor began his journey through Space and Time.”
Commenting on his upcoming role, David Bradley said, “I’m absolutely thrilled. I first heard about this role from Mark while watching the Diamond Jubilee flotilla from the roof of the National Theatre. When he asked if I would be interested, I almost bit his hand off! Mark 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.”
The current incarnation of "Doctor Who," starring Matt Smith, returns on March 30 as part of BBC AMERICA’s Supernatural Saturday programming block, alongside world premieres of new original series The Nerdist and Orphan Black.