Twice Upon a Time (Doctor Who) and Time". This makes him the third actor to play the role in the television programme, after William Hartnell and Richard Hurndall (in 1983's "The Five Doctors") since the premiere of "Doctor Who" in 1963. Bradley previously played Solomon in the 2012 episode "Dinosaurs on a Spaceship". The first trailer for the episode was shown during the 2017 San Diego Comic-Con, revealing the return of Polly, a companion from the end of William Hartnell's tenure as the First Doctor, portrayed by Lily Travers, and Pearl Mackie as Bill Potts. Also confirmed were appearances by Toby Whithouse, writer of seven episodes
Doctor Who: Thirty Years in the TARDIS programme's fiftieth anniversary in 2013, when the one-off special "An Adventure in Space and Time" was broadcast on BBC Two. Doctor Who: Thirty Years in the TARDIS Doctor Who: Thirty Years in the TARDIS is a one-off, 50-minute television documentary, broadcast to celebrate the thirtieth anniversary of the science-fiction series "Doctor Who". It was originally transmitted on Monday 29 November 1993, on BBC One (BBC Two in Scotland). The programme was the first BBC-produced, in-depth documentary chronicling "Doctor Who" since the earlier "Whose Doctor Who" was broadcast in April 1977, although a thirty-minute, categorized compilation of archive clips had been