Doctor Who

1963–1989; 1996 film; 2005–present

Television — the longest-running science-fiction series on television

A BBC science-fiction series first broadcast on 23 November 1963, the day after the assassination of John F. Kennedy, and devised by Sydney Newman, Donald Wilson and C. E. Webber with Verity Lambert as producer — the BBC's first female drama producer. Its central conceit, regeneration, was invented in 1966 to let the ailing William Hartnell be replaced, and has allowed the lead role to pass through fifteen numbered incarnations. The series was rested in 1989, returned as a one-off film in 1996 and was revived by Russell T Davies in 2005.

How to spot them

▸A blue police box, bigger inside than out, because the chameleon circuit jammed in 1963
▸TARDIS — Time And Relative Dimension In Space; a Time Lord from Gallifrey
▸Regeneration, devised in 1966 so a new actor could take over
▸A theme by Ron Grainer realised on tape by Delia Derbyshire at the BBC Radiophonic Workshop

Key facts

First broadcast at around ten past five on 23 November 1963, the day after the Kennedy assassination (1963)

The opening serial was An Unearthly Child; the episode was repeated the following week because so many had missed it

A theme by Ron Grainer realised on tape and test oscillators by Delia Derbyshire at the Radiophonic Workshop (1963)

Grainer reportedly asked 'Did I write that?'; Derbyshire went uncredited

Pepper-pot creatures with a sink plunger and a whisk, created by Terry Nation in December 1963 (1963)

The Daleks, whose success saved the programme; designed by Raymond Cusick

Silver men from the twin planet Mondas, devised by Kit Pedler and Gerry Davis in 1966 (1966)

The Cybermen, introduced in The Tenth Planet — the same serial that introduced regeneration

Tom Baker's seven years in a floppy hat and an absurdly long multicoloured scarf (1974)

1974–81, the longest run by any lead actor in the role

Rested by the BBC in 1989, returned as a single television film with Paul McGann in 1996 (1996)

A co-production with Fox that failed to launch an American series

Brought back in 2005 by Russell T Davies, with Christopher Eccleston in a leather jacket and Billie Piper as a London shop assistant (2005)

Rose Tyler; David Tennant took over at the end of that series

Ncuti Gatwa's incarnation ended in 'The Reality War' in 2025, with Billie Piper appearing in his place (2025)

Piper was not credited in the role, and the BBC has not yet named a successor

Key ideas

Regeneration began as a production expedient — William Hartnell's health was failing in 1966 — and became the device that lets the series outlive any cast, writer or producer. It is why a 1963 children's serial is still running.

Quick-fire facts

•First broadcast 23 November 1963; created under Sydney Newman, the BBC's Head of Drama, with Verity Lambert as producer
•TARDIS stands for Time And Relative Dimension In Space; the police box exterior is the result of a faulty chameleon circuit
•The Daleks were created by writer Terry Nation and designed by Raymond Cusick, appearing in the second serial in December 1963
•The theme was composed by Ron Grainer and realised by Delia Derbyshire at the BBC Radiophonic Workshop
•Regeneration was introduced in The Tenth Planet (1966), when Patrick Troughton replaced William Hartnell
•Tom Baker, the Fourth Doctor (1974–81), had the longest run; Jodie Whittaker was the first woman in the role, from 2018
•The series was suspended in 1989, revived for one television film with Paul McGann in 1996, and returned as a full series in 2005 under Russell T Davies
•Many 1960s episodes were wiped by the BBC and remain missing, though some have been recovered or animated
•Ncuti Gatwa played the Fifteenth Doctor from 2023 to 2025, departing in 'The Reality War'
•In June 2026 Russell T Davies announced he was leaving as showrunner, and the BBC said it would offer the series for competitive tender

Drill it — 9 cards

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Sources

BBC — Doctor Who — BBC programme and archive pages Consulted for broadcast history and production credits; cited without URL
The Doctor Who Companion — Billie Piper: 'I am not the next Doctor Who' Consulted for the 2026 status of the lead role; cited without URL