Complex sentence: In 1983 he sold his house in Bray and left Ireland, moving to Greenwich in London, where he worked until he retired, for BBC Radio 3, producing and presenting various music programmes, and reporting on'foreign' tapes.
Split into simpler sentences: In 1983 he sold his house in Bray and left Ireland, moving to Greenwich in London. He worked, until he retired, for BBC Radio 3, producing music programmes and reporting on'foreign' tapes.