Neville Fay's obituary reads like a field guide to a particular kind of British civic life that is harder to find than it used to be. Not the committee-and-gala version, but the version where you squat a rectory, form a housing co-operative, and then accidentally build an organisation that plants 50 million trees across Africa. The through-line is not environmentalism as ideology but environmentalism as practical response: there is a dead elm, so you buy a chainsaw; there is a famine, so you raise money in a pub. The Tree Aid founding story is instructive for what it isn't. Fay did not design a new programme, hire consultants, or write a theory of change. He watched the 1985 Ethiopian famine coverage, concluded that emergency food aid was structurally inadequate, gathered friends at the pub in Chew Stoke, and started directing funds to existing community-led initiatives in the Sahel. The model — find people already doing the work, accelerate them — is the opposite of the institutional reflex to build from scratch. Tree Aid has planted almost 50 million trees to date. What makes the life distinctive is the recursive pattern: Fay kept building cooperative structures and then stepping away from them. The Lodge Co-operative Housing Association still provides affordable homes. Treework Services became a 30-person co-op, then an arboricultural consultancy now run by his son Luke, with his daughter Rachael also in the company. Tree Aid continued to thrive after he left in 1992. The Sustainable Soils Alliance, founded in 2017 with his daughter Ellen, carries the same DNA. He built vessels, not monuments. His second career in veteran tree science produced lasting institutional infrastructure: the Veteran Tree Survey for English Nature, co-authorship of three standard reference texts, and pivotal roles in the Ancient Tree Forum and National Tree Safety Group. The 2009 Arboricultural Association award for services to arboriculture was recognition from peers, not publicists. His "innovations in arboriculture" seminars popularised conservation arboriculture as a discipline. The biographical arc — Jewish parents who fled persecution in eastern Europe, then fled apartheid South Africa for Liverpool; a boy who found communal politics at Harold House youth club, dropped out of Aberdeen to organise tenants, ran a halfway house for ex-offenders, squatted a rectory — is not decorative. It is the engine. Every institution Fay built was cooperative by design, not by afterthought. The housing association, the tree services co-op, the charity model that funded existing African community projects rather than imposing new ones. Fay never formally retired. He cared for his wife Kate through many years of illness. He was a fellow of the Royal Geographical Society, the Linnean Society, and the Royal Society of Arts. He is survived by Kate, four children, and six grandchildren. He died aged 78, in the rectory he squatted in 1976.