Exterior design When
Doctor Who was being developed in 1963 the production staff discussed what the Doctor's time machine would look like. To keep the design within budget it was decided to make the outside resemble a
police telephone box, a common piece of
street furniture that had originally been designed in the 1920s by the Scottish architect
Gilbert Mackenzie Trench. The idea for the police-box disguise came from a
BBC staff writer,
Anthony Coburn, who rewrote the programme's first episode from a draft by
C. E. Webber. While there is no known precedent for this notion, a November 1960 episode of the popular radio comedy show
Beyond Our Ken included a sketch featuring a time machine described as "a tall telephone box". The concept of a
cloaking mechanism (later referred to as the "chameleon circuit") was devised to explain this. In the first episode,
An Unearthly Child (1963), the TARDIS is first seen hidden in a London scrapyard in 1963, and after travelling back in time ("
The Cave of Skulls") to the
Paleolithic era, the police box exterior persists. In a subsequent story,
The Time Meddler (1965), the
First Doctor explains that the TARDIS should automatically adopt a disguise, such as a
howdah (a carrier on the back of an Indian elephant in the
Indian Mutiny) or a rock on a beach. Accounts differ as to the origin of the police box prop. While the BBC asserts that it was constructed specially for
Doctor Who, it has been claimed that the box was a reused prop from the BBC television police dramas
Z-Cars or
Dixon of Dock Green (a claim repeated by
Doctor Who producer
Steven Moffat). The dimensions and colour of the TARDIS police box props used in the series have changed many times, as a result of damage and the requirements of the show, and none of the BBC props has been a faithful replica of the original MacKenzie Trench model. Numerous details have been altered over time, including the shape of the roof, the signage, the shade of blue paint, the presence of a
St John Ambulance emblem and the overall height of the box. The original prop remained in use for around 13 years until it collapsed – reportedly on
Elisabeth Sladen's head. A new prop was introduced for
The Masque of Mandragora in 1976, and there have been at least six versions in total. The evolution of the prop design was referenced on-screen in the episode "
Blink" (2007), when the character
Detective Inspector Shipton says the TARDIS "isn't a real [police box]. The phone's just a dummy, and the windows are the wrong size."
Interior design The TARDIS console room was designed for the first episode by
set designer
Peter Brachacki and was unusually large for a BBC production of this time. It was noted for its innovative, gleaming white "futuristic" appearance. Like the police box prop, the set design of the TARDIS interior has evolved over the years. From the inception of the show in 1963 up until the end of the "
classic series" in 1989, the design of the TARDIS console room remained largely unchanged from Brachacki's original set, a brightly lit white chamber, lined with a pattern of roundels on the walls and with a central hexagonal console which contained a cylindrical "time rotor" that moved when the TARDIS was in transit. Numerous alterations were made to the central console and to the layout, but the overall concept remained constant. In
Season 14 (1976–77), a dark wood-panelled "Control Room Number 2" was briefly used for a few episodes, but the white console room set was reinstated in
Season 15, due to damage to the set. After the cancellation of the television show, a radically redesigned TARDIS set was used in the
1996 TV movie, heralding a move to a more
steampunk-inspired set design, which later influenced the set design in the
revived series from 2005 onwards. File:Doctor Who Experience (13080761155).jpg|The original 1963 set (2014 reproduction) File:Doctor Who Experience (25307755549).jpg|The console room set used from 1977 to 1983 File:Console (23963541552).jpg|The updated console room set used from 1983 to 1989 File:Tardis (6502023691).jpg|The redesigned set from 2005 to 2010 File:BBC Tardis Set (6868569950).jpg|The TARDIS interior used by the
Eleventh Doctor (
Matt Smith) from 2010 to 2012 File:Peter Capaldi's TARDIS Set (25074781711).jpg|The TARDIS interior from 2012 to 2017, as it appeared during the era of the
Twelfth Doctor (
Peter Capaldi)
Depiction of time travel The production team conceived of the TARDIS travelling by
dematerialising at one point and rematerialising elsewhere, although sometimes in the series it is shown also to be capable of conventional space travel. In the 2006 Christmas special, "
The Runaway Bride", the Doctor remarks that for a spaceship, the TARDIS does remarkably little flying. The ability to travel simply by fading into and out of different locations became one of the trademarks of the show, allowing for a great deal of versatility in setting and storytelling without a large expense in special effects. The distinctive accompanying sound effect – a cyclic wheezing, groaning noise – was originally created in the
BBC Radiophonic Workshop by sound technician
Brian Hodgson by
recording on tape the sound of his mother's house key scraping up and down the
strings of an old piano. Hodgson then re-recorded the sound by changing the tape speed up and down and splicing the altered sounds together. When employed in the series, the sound is usually synchronised with the flashing light on top of the police box, or the fade-in and fade-out effects of a TARDIS. Writer
Patrick Ness has described the ship's distinctive dematerialisation noise as "a kind of haunted grinding sound", while the
Doctor Who Magazine comic strips traditionally use the
onomatopoeic phrase "vworp vworp vworp". ==Other appearances==