He had multiple roles as a writer, broadcaster, environmentalist, agrarian, smallholder and activist; a rebel against: consumerism, industrialisation, genetically modified organisms, cities, motor cars; an advocate for: self-reliance, personal responsibility, self-sufficiency, conviviality (food, drink, dancing and singing), gardening, caring for the Earth and for the soil.
After schooling in England and Switzerland,[citation needed] he studied agriculture at Wye College,[1] In 1934, at the age of 20, he went to Southern Africa where he held a succession of jobs: a farmhand and then manager of a sheep farm, a deckhand and skipper of a snoek fishing boat operating from Namibia (then South-West Africa) along the Skeleton Coast, a copper mine worker in Zambia (then Northern Rhodesia), and a worker for the government veterinary service.
On his return to Britain after the war Seymour worked for a while on a Thames sailing barge 'Cambria', skippered by Bob Roberts, operating around the south and east coasts of England, where he picked up the folk songs of a disappearing occupation.
At the end of the 1960s, Seymour, along with other radical voices like Herbert Read, Edward Goldsmith, Leopold Kohr and Fritz Schumacher, provided a stream of articles for the journal Resurgence edited from 1966 to 1970 by John Papworth.
Appearing shortly after the publication of E.F. Schumacher's Small Is Beautiful: A Study of Economics As If People Mattered (1973) and The Good Life's first showing on British television (1975), the sales of the book exceeded all expectations.
In the early 1980s he spent three years making the BBC series Far From Paradise (with Herbert Girardet) which examined the history of human impact on the environment.
His farm in Wales welcomed visitors seeking guidance on the smallholder's life, a project which continued when he moved to County Wexford in Ireland.