Born into a prominent London, England family, Tree was always known by his middle name, Jeremy. His father was Ronald Tree, an American-born British journalist, investor and Conservative Member of Parliament (MP) for the Harborough constituency in Leicestershire. His mother, Nancy Lancaster, was a niece of the MP Nancy Astor through whom young Jeremy would be introduced to the sport of Thoroughbred racing. Jeremy Tree was a paternal half-brother of the model Penelope Tree.
Jeremy Tree embarked on a career in racing in 1947 after inheriting the bloodstock of his uncle, Peter Beatty, and initially worked as assistant to the trainer Richard Warden. He began training on his own at Newmarket Racecourse in 1952 then the following year relocated to stables at Beckhampton, Wiltshire. He won his first Classic in 1963 when Only for Life captured the 2,000 Guineas Stakes. He went on to win three more classics, taking the Epsom Oaks with Juliette Marny in 1975 and Scintillate in 1979, then a second 2,000 Guineas Stakes in 1980 with Known Fact. Among his other top runners, Jeremy Tree trained Rainbow Quest to wins in the 1985 Coronation Cup and the Prix de l'Arc de Triomphe.
After forty-three years in racing, Jeremy Tree retired in 1989 to his home in Beckhampton.
- Griffiths, Richaard (9 March 1993). "Obituary: Jeremy Tree". The Independent. Retrieved 19 March 2015.
- Obituary: Jeremy Tree The Independent, 9 March 1993
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