From the 1960s to the 1990s he was head of postgraduate theatre design at the Slade School of Fine Art,[1] with the help of Nicholas Georgiadis and later, Yolanda Sonnabend.
[2] In 1946, he studied briefly at Goldsmiths College and worked as a journalist on the South London Press before doing his national service with the Royal Engineers in the Middle East.
Other early theatre work included designs for Lennox Berkeley's one-act opera A Dinner Engagement at the Aldeburgh Festival in 1954, Frederick Ashton's ballet Variations on a Theme by Purcell at the Royal Opera House in 1955, and Noël Coward's South Sea Bubble, at the Lyric Theatre in 1956.
Snow designed a BBC film about Rex Whistler in 1978 and continued to exhibit regularly at the Beaux Arts and, after it closed down, the Piccadilly and Albemarle galleries.
In 1963 Snow married Maria Wirth, an Australian colour consultant and interior designer; she died in December 2007.