“Doctorin’ the Tardis” is a 1988 electronic novelty pop 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 (Part Two)” with sections from “Blockbuster!” by Sweet. The single was not well received by critics but was a commercial success, hitting number one on the UK and New Zealand singles charts, and reaching the top 10 in Australia, Finland, Ireland and Norway.

The Timelords followed up their chart-topping record with a “how to have a number one” guide, The Manual (How to Have a Number One the Easy Way).