As announced last month, the one-off special will star David Bradley as William Hartnell, Doctor Who’s first ever lead.
Written by Mark Gatiss, An Adventure In Space And Time forms “part of the BBC’s blockbuster celebrations” of the show’s 50th anniversary.
The cast also includes Brian Cox as the show’s creator and BBC Head of Drama Sydney Newman, Call The Midwife star Jessica Raine as producer Verity Lambert, and Sacha Dhawan as Waris Hussein, Director of the first ever episode.