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
Space and Time (Doctor Who) glass floor surrounding the console and becomes distracted by Amy's short skirt, causing him to drop the thermal couplings he was holding. This causes the three to be stuck in a "space loop" where the TARDIS materializes inside of the TARDIS. "Space" and "Time" were filmed in two days alongside the sixth series DVD "Night and the Doctor" extras "Bad Night" and "Good Night". The episodes are intended to show what life aboard the TARDIS would be like. Several editing techniques and doubles were used for the various shots where there were more than one of the same character on