The sixteenth season of British science fiction television series Doctor Who, known collectively as The Key to Time, began on 2 September 1978 with The Ribos Operation, and ended with The Armageddon Factor. The arc was originally conceived by producer Graham Williams, who had proposed it as part of his application for the producer's job in 1976. The name refers to the powerful artefact, the segments of which are what the Fourth Doctor and his companions, Romana and K9, search for during the season. Anthony Read continued in his role as script editor, from the previous season. Douglas Adams also became script editor alongside Read.
Dudley George Simpson was an Australian composer and conductor. He was the Principal Conductor of the Royal Opera House orchestra for three years and worked as a composer on British television. He worked on the BBC science-fiction series Doctor Who, for which he composed incidental music during the 1960s and 1970s. When Simpson died aged 95 in 2017, The Guardian wrote that he was "at his most prolific as the creator of incidental music for Doctor Who in the 1960s and 1970s, contributing to 62 stories over almost 300 episodes – more than any other composer."
The 26th season of Doctor Who premiered on 6 September 1989 with the serial "Battlefield," and consisted of four serials, ending with "Survival," which was the final episode of Doctor Who for 15 years, until the show was revived in 2005. John Nathan-Turner produced the series, with Andrew Cartmel script editing.
The twenty-fifth season of British science fiction television series Doctor Who began on 5 October 1988. It comprised four separate serials, beginning with Remembrance of the Daleks and ending with The Greatest Show in the Galaxy. To mark the 25th anniversary season, producer John Nathan-Turner brought back the Daleks and the Cybermen. The American New Jersey Network also made a special behind-the-scenes documentary called The Making of Doctor Who, which followed the production of the 25th anniversary story Silver Nemesis. Andrew Cartmel script edited the series.
The twenty-fourth season of British science fiction television series Doctor Who began on 7 September 1987 with Sylvester McCoy's first story Time and the Rani, and ended with Dragonfire. John Nathan-Turner produced the series, with Andrew Cartmel script editing.
The twenty-second season of British science fiction television series Doctor Who began on 5 January 1985 and ended on 30 March 1985. It opened with the serial Attack of the Cybermen and ended with the serial Revelation of the Daleks. The season returned to the traditional Saturday transmission for the first time since Season 18, but for the first and only time in the series' first run it featured 45-minute episodes in its entirety. During transmission, BBC1 controller Michael Grade announced an 18-month hiatus for the series, partly citing the violence depicted in the stories of the season. John Nathan-Turner produced the series with Eric Saward as script editor.
The twenty-first season of British science fiction television series Doctor Who began on 5 January 1984 with the Fifth Doctor serial Warriors of the Deep, and ended with Colin Baker's first serial The Twin Dilemma. For the third time, the entire TARDIS crew changed over the course of a single season. John Nathan-Turner produced the series, with Eric Saward script editing.
The twentieth season of British science fiction television series Doctor Who began on 3 January 1983 with the story Arc of Infinity, and ended 16 March 1983 with The King's Demons. A 20th Anniversary special, The Five Doctors, followed in November 1983. John Nathan-Turner produced this series, with Eric Saward script editing.
The nineteenth season of British science fiction television series Doctor Who began on 4 January 1982 with Castrovalva, and ended with Time-Flight. John Nathan-Turner produced the series, with two script editors: Anthony Root and Eric Saward.
The eighteenth season of British science fiction television series Doctor Who consisted of seven four-episode serials broadcast from 30 August 1980 with the serial The Leisure Hive, to 21 March 1981 with the serial Logopolis. The season is Tom Baker's final as the Fourth Doctor before his regeneration into the Fifth Doctor, as well as Lalla Ward's as companion Romana II and John Leeson's as the voice of K9. For the second time, the entire main cast changed over the course of a single season. The season also sees the debut of Matthew Waterhouse as Adric, Sarah Sutton as Nyssa, and Janet Fielding as Tegan Jovanka, the three of whom would remain regular companions into the Fifth Doctor's era, as well as the return of the Master, portrayed both by Geoffrey Beevers and Anthony Ainley.
The fifteenth season of British science fiction television series Doctor Who began on 3 September 1977 with the episode Horror of Fang Rock, and ended with The Invasion of Time. The fourth series for the Fourth Doctor, new producer Graham Williams became producer for this series, while Robert Holmes left script editing for Anthony Read midway through.
The fourteenth season of British science fiction television series Doctor Who began on 4 September 1976 with The Masque of Mandragora, and ended with The Talons of Weng-Chiang. The third Fourth Doctor series, it was the final series of Philip Hinchcliffe's production, whilst Robert Holmes stayed till The Sun Makers in the next series.
The thirteenth season of British science fiction television series Doctor Who began on 30 August 1975 with the story Terror of the Zygons, and ended with The Seeds of Doom. This is the second series to feature the Fourth Doctor, played by Tom Baker, with Philip Hinchcliffe producing and Robert Holmes script editing. In September 2009, it was ranked as readers' favourite season in Doctor Who Magazine issue 413.
The twelfth season of British science fiction television series Doctor Who began on 28 December 1974 with Tom Baker's first serial Robot, and ended with Revenge of the Cybermen on 10 May 1975.
The eleventh season of British science fiction television series Doctor Who began on 15 December 1973 with the serial The Time Warrior, and ended with Jon Pertwee's final serial Planet of the Spiders. The season's writing was recognized by the Writer's Guild of Great Britain for Best Children's Drama Script. This is the Third Doctor's fifth and final series, and also the last consecutively to be produced by Barry Letts and script edited by Terrance Dicks. Both Letts and Dicks would work for the programme again, however - Letts in Season 18 and Dicks on future stories, e.g. Horror of Fang Rock.
The tenth season of British science fiction television series Doctor Who began on 30 December 1972 with the tenth anniversary special The Three Doctors, and ended with Katy Manning's final serial The Green Death. This is the Third Doctor's fourth series, as well as fourth for producer Barry Letts and script editor Terrance Dicks.
The ninth season of British science fiction television series Doctor Who began on 1 January 1972 with Day of the Daleks, and ended with The Time Monster. This is the third series of the Third Doctor, played by Jon Pertwee, as well as the third to be produced by Barry Letts and script edited by Terrance Dicks.
The sixth season of British science fiction television series Doctor Who began on 10 August 1968 with the first story of season 6 The Dominators and ended Patrick Troughton's reign as the Doctor with its final story The War Games. Only 37 out of 44 episodes are held in the BBC archives; 7 remain missing. As a result, 2 serials are incomplete: only episode 2 of the 6-part story The Space Pirates still exists, while The Invasion has had its two missing episodes reconstructed using animation.
The fourth season of British science fiction television series Doctor Who began on 10 September 1966 with the First Doctor story The Smugglers and, after a change of lead actor part-way through the series, ended on 1 July 1967 with The Evil of the Daleks. For the first time, the entire main cast changed over the course of a single season.
