The adventures of a Time Lord—a time-travelling humanoid alien known as the Doctor—who explores the universe in his TARDIS, a sentient time-travelling space ship. Its exterior appears as a blue British police box, which was a common sight in Britain in 1963 when the series first aired. Along with a succession of companions, the Doctor faces a variety of foes while working to save civilisations, help ordinary people, and right wrongs.

The show has received recognition as one of Britain’s finest television programmes, winning the 2006 British Academy Television Award for Best Drama Series and five consecutive awards at the National Television Awards during Russell T Davies’s tenure as Executive Producer. In 2011, Matt Smith became the first Doctor to be nominated for a BAFTA Television Award for Best Actor. In 2013, the Peabody Awards honoured Doctor Who with an Institutional Peabody “for evolving with technology and the times like nothing else in the known television universe.” The programme is listed in Guinness World Records as the longest-running science fiction television show in the world and as the “most successful” science fiction series of all time—based on its over-all broadcast ratings, DVD and book sales, and iTunes traffic. During its original run, it was recognised for its imaginative stories, creative low-budget special effects, and pioneering use of electronic music.

The Sarah Jane Adventures is a British science fiction television series, produced by BBC Cymru Wales for CBBC, created by Russell T Davies and starring Elisabeth Sladen. The programme is a spin-off of the long-running BBC science fiction programme Doctor Who and focuses on the adventures of Sarah Jane Smith, a middle-aged investigative journalist who, in her youth, had numerous adventures across time and space. The series debuted on BBC One with a 60-minute special, entitled “Invasion of the Bane”, on 1 January 2007. A full series of ten 25-minute episodes followed, beginning on 24 September 2007. The first series consisted of five two-part stories, and a second series, comprising six two-part stories, began airing on 29 September 2008. A third series, once again comprising six two-part stories to make a total of twelve episodes, with Russell T Davies serving as executive producer, aired from 15 October 2009 to 20 November 2009.

The fourth series aired from 11 October 2010. An episode of another spin-off series, Sarah Jane’s Alien Files, was shown immediately after each of the first episodes of the stories. Filming for three of six two-part serials planned for the fifth series was completed prior to Elisabeth Sladen’s death on 19 April 2011. Although some UK media, including the Sun, reported in early May 2011 that production of the series was to continue, the BBC has stated explicitly that no further episodes will be filmed. The fifth series was broadcast starting 3 October 2011 on Mondays and Tuesdays. It finished just two weeks later on 18 October 2011.