At the height of its success in the late 1970s, Top Of The Pops routinely pulled in 15 million viewers for its BBC1 Thursday night slot - peaking at 19 million in 1979. Launched on January 1, 1964, it ran for 42 years and boasted massive names from David Bowie to Prince and Madonna. But, by the time it was axed, it had been bumped from BBC1 to BBC2 and viewers had dwindled to around 1.5 million.