UK stopped using VHF for TV in the early 1980s, at 405 lines. In the late 1960s the 625 standard started, and went from UHF channel 21 to about 69. TVs didn't s

UK stopped using VHF for TV in the early 1980s, at 405 lines. In the late 1960s the 625 standard started, and went from UHF channel 21 to about 69. TVs didn't support VHF frequencies. Ch 36 was (is) about 590-600MHz, and wasn't used by any transmitters (neither was 35 or 37, at least until the 1990s when Channel 5 came out)