 In 1953 Heath joined the Nature Conservancy and was based at the Merlewood Research Station in Cumbria.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.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.