Best known for playing Alfie Butts in the
BBC sitcom
My Family, Meilir has also appeared in a number of popular television shows such as
Afterlife and ''
Terry Pratchett's Hogfather on Sky One. He has also featured in a number of films, including the 2007 film The Baker and the 2014 film Pride
, directed by Matthew Warchus. In 2006, he appeared in the Doctor Who'' episode "
The Runaway Bride". He is well known on Welsh television for his roles in an extensive range of shows including
Y Pris,
Caerdydd,
Teulu,
Tipyn o Stad,
Cyw and
Y Gwyll. He played the lead role of Trefor the taxi driver in
Gwlad yr Astra Gwyn, for which he received a
BAFTA Cymru nomination as best actor in 2013, and was the original
Rapsgaliwn. In 2016-2017 he appeared in a regular role in the drama
Byw Celwydd. Meilir has toured with numerous theatre companies including
Theatr Genedlaethol Cymru, Theatr Fran Wen and Bara Caws. In 2018, Meilir starred in
Craith, a crime thriller about abduction and murder, broadcast on S4C in the
Welsh language. The series is set in Wales and ran in January-February 2018, later being shown on BBC One Wales as
Hidden. He said of his role: "He’s a complicated character; the result of mistreatment and violence at the hands of his own mother." In 2023, he starred in the black comedy
Pren ar y Bryn on S4C, later shown in English on BBC One as
Tree on a Hill. ==Selected theatre==