The award-winning series that airs on S4C starring Eve Myles achieved a high of 6.2 million viewers across the UK when it returned on the 12th May.
The show which translates as “One Wednesday Morning” stars Eve as Faith, the solicitor of a family-run law firm.
Un Bore Mercher has the accolade of being among S4C’s highest viewing figures since 2010
Speaking about the show Series producer Gwenllian Gravelle says “Un Bore Mercher shows Wales at its best – not only the special landscapes and the strength of the Welsh language but also the talented actors and authors with the wide range of skills behind the Welsh language.
“I’m so pleased that Un Bore Mercher has caught the imagination of viewers in Wales and has travelled across our borders to viewers in the rest of the UK. Everybody worked so hard on the series to ensure that every aspect of the production reached the highest possible standard.
Keeping Faith Series 2 returns in English to BBC One later this year.