BBC and Star Trek
According to the Star Trek Fan site memory-alpha the BBC was the first-run broadcaster of Star Trek (12 July 1969-15 December 1971) and TNG (26 September 1990-6 May 1992, up to "The Best of Both Worlds, Part II"). After 1992, the first-run rights of TNG – and later DS9 and Voyager – went to Sky One, with the BBC showing the episodes several months later.