An Adventure in Space and Time led to him being cast as the First Doctor himself in the 2017 "Doctor Who" episodes "The Doctor Falls" and "Twice Upon a Time" and in a series of audio adventures for Big Finish Productions. In 1966, William Hartnell (David Bradley) is in his dressing room at the BBC. He insults a stagehand who calls him to the set, where the delay caused by his absence is noticed. Hartnell enters in costume, ready to film his last moments as the First Doctor and stands in front of the TARDIS console. Three years earlier, BBC executive Sydney Newman (Brian Cox) is
Doctor Who – The Ultimate Adventure Doctor breaks his conditioning and defuses the bomb by putting it in a teapot. The play featured a female Prime Minister named in the script 'Mrs. T' (a reference to Margaret Thatcher). The Third Doctor addresses her as Margaret in the play whilst the Sixth Doctor addresses her as Maggie. The Third Doctor also mentions Denis, a reference to Denis Thatcher, Margaret Thatcher's husband. The play also features some musical numbers, including two from Crystal and "Business is Business" from Madam Delilah, the title of which acted as a catchphrase running throughout the play. The script featured numerous "Doctor Who"