At around midnight on the night of 2–3 July 1969, Jones was discovered motionless at the bottom of his swimming pool at Cotchford Farm. His Swedish girlfriend, Anna Wohlin, was convinced he was alive when he was taken out of the pool, insisting he still had a pulse. However, by the time the doctors arrived, it was too late and he was pronounced dead on arrival at the hospital, at the age of 27. The coroner's report stated it was a drowning, later clarified as "death by misadventure", and noted his liver and heart were heavily enlarged by past drug and alcohol abuse.