[1] Born in Worcester on 18 January 1922, his father Frederick Heath had been an officer in the Indian Army, who had taken a teaching job in Southampton and became the head of an elementary school in Winchester.
In 1953 Heath joined the Nature Conservancy and was based at the Merlewood Research Station in Cumbria (at that time part of Lancashire).
In 1967 Heath moved to Monkswood Experimental Research Station where he worked until his retirement in 1982 where he was head of the Biological Records Centre.
[4][5] A founder member and vice-president of the Society of European Lepidopterology, Heath was particularly interested in the Micropterigidae and bequeathed his specimen collection to the Natural History Museum, London.
John Heath was chief editor of the Moths and Butterflies of Great Britain and Ireland series, published by Harley Books.