Was originally broadcast on British regional TV channel Yorkshire Television, at 6.30pm following the local news programme Calendar (1968), and was originally called "Calendar Countdown". Richard Whiteley was (and had been for years) a presenter on "Calendar" from 1968 until 1995. "Countdown" shortly thereafter moved to Channel 4 upon that channel's launch. Originally, Carol Vorderman (then a newcomer) was only there to perform the numbers rounds of the game - the letters rounds were presented in the early series by another hostess.