Pobol y Cwm (People of the Valley; ) is a Welsh language soap opera which has been produced by the BBC since October 1974. The longest-running television soap opera produced by the BBC, Pobol y Cwm was originally transmitted on BBC Wales television and later transferred to the Welsh-language station S4C when it opened in November 1982. During its time on BBC Wales it was shown on English transmitters of BBC1 (without subtitles) usually on Tuesday afternoons at 3.20pm; however BBC Wales did not reshow it in this slot (to avoid having to pay repeat fees), instead they generated Testcard G with music to fill the gap.