David Bradley (English actor) in the final episode of the tenth series of "Doctor Who", "The Doctor Falls", Bradley returned to portray the First Doctor, having previously been portrayed by Hartnell, who originally played the character. He reprised this role in the 2017 Christmas special, "Twice Upon a Time". This makes him the third actor to play the role in the television programme, after William Hartnell and Richard Hurndall since the premiere of "Doctor Who" in 1963, and at the age of 75, he is the also the oldest actor to play the role of the Doctor. Bradley serves as the President of Second
The Chase (Doctor Who) the last appearance of Russell and Hill as companions Ian and Barbara and the introduction of Peter Purves as new companion Steven Taylor. In the TARDIS, the Doctor, Ian, Barbara, and Vicki are huddling around the Time-Space Visualiser, a television-like souvenir from their recent adventure at the Space Museum, which can pick up on any past event in the whole of time and space. The TARDIS then lands, and the Doctor confirms conditions are hospitable. Ian and Vicki leave to explore the desert wilderness. They find an ancient trap door in the sand. Inside, they are trapped — and become