"Doctorin' the Tardis" is a novelty single by the Timelords ("Time Boy" and "Lord Rock", aliases of Bill Drummond and Jimmy Cauty, better known as the KLF).

The song is predominantly a mash-up of the Doctor Who theme music and Gary Glitter's "Rock and Roll" with sections from "Block Buster!"

However, unlike the cultish limited releases of The JAMs, in which Drummond's Clydeside rapping and social commentary were regular ingredients, "Doctorin' The Tardis" was an excursion into the musical mainstream, with the change of name to "The Timelords" and an overt reliance on several iconic symbols of 1970s and 1980s British popular culture, including Gary Glitter's "Rock and Roll Parts 1 and 2", the Doctor Who theme tune, Doctor Who's Daleks and the TARDIS, The Sweet's "Block Buster!"

[4] Skinner called the record an "aberration", to which Drummond pleaded "guilty", adding that "we justified it all by saying to ourselves 'We're celebrating a very British thing here... you know, something that Timmy Mallett understands'".

[11] The "Doctorin' the Tardis" music video features Ford Timelord driving around the countryside in pursuit of some rather crudely designed Daleks, his wailing siren audible throughout.

The video was filmed in part at the now defunct RAF Yatesbury, a Royal Air Force base in Wiltshire, and—according to The Timelords—cost in the region of £8,000 to make.

[13] Sounds reasoned that it was "a record so noxious that a top ten place can be its only destiny", calling it a "rancid reworking of ancient discs".

"[2] Music critic Tom Ewing, writing for Freaky Trigger, later gave the song a 9/10 in a series where he individually reviews every UK number one single ever, saying it mixes the Doctor Who theme tune "with the pop sounds of 1974, the year of glam rock and Davros, scarves on the Rollers and scarves on the new Doctor, glitterbeat and “Blockbuster” airhorns.

It's a companion piece to "Theme From S'Express" in that sense and just as good – part of the same rediscovery of the 70s, beckoning the boy gangs of yobs and nerds onto the dancefloor, the ones Mark Moore didn't invite to his party.

"[15] The Timelords released one other product on the strength of "Doctorin' the Tardis", a 1989 book called The Manual (How to Have a Number One the Easy Way), in which they candidly described the logistical processes and efforts that sealed the record's commercial success.

The formats and track listings are tabulated below:[20] The song was released on streaming services as part of the "Solid State Logik 1" album on 1 January 2021.