Why was it necessary to colourise The Time Monster episode 6?
Between its original broadcast on 24th June 1972 and 1977/8, when the newly-appointed BBC Archive Selector Sue Malden began investigating what material still remained in the hands of various BBC departments, the original 2-inch PAL transmission tape of The Time Monster :6 (and indeed, the PAL tapes of the entire serial) had been wiped. In 1977, 16mm monochrome film recordings of all six episodes were discovered at BBC Enterprises (a clip from this version can be found on the 1977 documentary Whose Doctor Who), however in 1979 2-inch NTSC colour transmission tapes of all six episodes were returned to the BBC by TV Ontario, Canada. A similar process occurred with several other Pertwee stories, including Colony in Space and The Curse of Peladon, and in such cases the only option was to reconvert the Canadian NTSC tapes to PAL – however even with 1990s standards conversion equipment, the reconverted tape is left with motion artefacts from the original crude 1970s PAL to NTSC conversions th
