He attended Ysgol Dyffryn Ogwen, then studied English and Welsh at the University College of North Wales.

"[1] He is best known to British audiences for his starring role in the 1978 drama series Hawkmoor, and appearances in the television series The District Nurse and the Doctor Who serial Revelation of the Daleks, Ogwen has been a stalwart of Welsh language television and film since the early 1970s.

He has also written plays, presented documentary series and recorded readings of Welsh-language works.

[2] Ogwen has a keen interest in football, and played as a striker for Bangor City when still in the sixth form at school.

[3] He is married to Maureen Rhys, one of Wales' most recognisable actresses,[4] and in the past they have frequently worked together in productions.