On graduating he moved to London where, by 1960, he established his reputation at the forefront of contemporary art through solo exhibitions at the Institute of Contemporary Arts and the Drian and Tooth Galleries. From the mid-1950s onwards, Crozier spent long periods living in Dublin and Paris, followed by a period in southern Spain, which was to prove central to his development as an artist.

Since 1983 he has been based in West Cork and the UK. He has represented the UK and Ireland overseas, and has been awarded the Premio Lissone from Italy and the Gold medal for Painting of the Oireachtas in 1994. In 1991 the Crawford Art Gallery Cork and the Royal Hibernian Academy curated a major retrospective of his work. He was elected to Aosdána in 1992 and is an honorary member of the Royal Hibernian Academy.

William Crozier’s work is included in museums worldwide, from the national galleries of Australia, Canada and Poland, to the museums of modern art of Scotland, Ireland and Denmark. He is represented by the Taylor Galleries in Dublin, and by Flowers Galleries and Pyms Gallery in London.