Motor racing legend John Surtees, the only man to win the world championship on two and four wheels, has died aged 83.
Surtees won the motorcycle world championship in 1956, 1957, 1958 and 1960, before switching to Formula One, where he won the title in 1964 for Ferrari. The achievement has never been matched since.
The Englishman's F1 career spanned 12 years and also included stints at Lotus, Cooper, Lola, Honda, BRM and finished with his own team, Surtees, in 1972. During that time he won six races, the last of which came at the 1967 Italian Grand Prix for Honda.
In recent years Surtees had set up the Henry Surtees Foundation in memory of his son, who was killed when hit by a bouncing tyre while competing in a Formula 2 race at Brands Hatch in 2009.
On Friday his family confirmed he had passed away peacefully after a short hospital visit with "an existing respiratory condition". His wife, Jane and daughters, Leonora and Edwina were by his side.
In a statement on the Henry Surtees Foundation's Facebook page, the family said: "John was a loving husband, father, brother and friend. He was also one of the true greats of motorsport and continued to work tirelessly up until recently with The Henry Surtees Foundation and Buckmore Park Kart Circuit.
"We deeply mourn the loss of such an incredible, kind and loving man as well as celebrate his amazing life. He has set a very real example of someone who kept pushing himself at his peak and one who continued fighting until the very end."
Surtees had been the oldest surviving F1 world champion before his death.