Mari Grug

Mari, a farmer’s daughter from Mynachlog-ddu, Pembrokeshire, is an accomplished broadcaster with over 20 years’ experience. She began her television career with S4C as a children’s presenter before continuing with the broadcaster to present some of Wales’ largest cultural events, including the Urdd and National Eisteddfod, the Royal Welsh Show and also presenting the Weather on S4C.

In 2013 she decided it was time to return to West Wales to raise a family. Since then, much of her work has been based in Llanelli as part of the popular daily programmes ‘Heno’ and ‘Prynhawn da’ presenting team, and is also heard occasionally on Radio Cymru.

Following her cancer diagnosis in 2023, Mari launched the first Welsh language podcast called ‘1 mewn 2’ discussing cancer, which won a British Podcast Award in 2025 and also several prizes at the Welsh Podcast Awards 2026. She also published her autobiography ‘Dal i fod yn fi’ with the author Meleri Wyn James with an English version to be published in 2027. 

Mari allowed cameras to follow her journey for a year as she faced treatment and the physical and emotional challenges of cancer in the S4C documentary ‘Mari Grug: Un dydd ar y tro’ which has recently won her a Bafta Cymru award for the best Presenter. In addition, she has become an ambassador for Cancer Research Wales and as a mother of three, life is busy but full of fun.