<P> The series co-stars Hannah Daniel , Matthew Gravelle , Bradley Freegard , Mark Lewis Jones , Mali Harries and Aneirin Hughes . Initial S4C broadcasts carried entirely English subtitles , while repeat airings carried encoded English subtitles for scenes spoken in Welsh . The series has concurrently been available on the BBC iPlayer as part of the BBC 's ongoing relationship with S4C . The series was filmed concurrently in both Welsh and English , and the English - language version premiered on BBC Wales in on 13 February 2018 . </P>
when is the new series of keeping faith starting
13 February 2018