It sees the return of David Bradley as the First Doctor, a role originally portrayed on screen by William Hartnell from 1963-1966 as well as by Bradley in the upcoming TV Christmas Special, "Twice Upon A Time".
It sees the return of David Bradley as the First Doctor. Bradley portrays the role in the upcoming Christmas Special, "Twice Upon A Time" and previously portrayed William Hartnell in the BBC bio-drama, "An Adventure in Space and Time".