His best moment probably was as a 19 year old in 1981 when he rode the star horse Shergar to victory in the Epsom Derby.Under him, Shergar pulled clear of the field, and won by
ten lengths - the greatest distance recorded in the race's 236-year history.
The Michael Stoute-trained horse was later kidnapped by masked gunmen, who held the horse's groom and his family at gunpoint during the raid.
Police were criticised for the investigation that followed the theft of the horse, and Shergar was never seen again. The mystery has captured the minds of many racing enthusiasts and members of the public.
Among those who have been expressing their condolence on the rider's death, are famous riders AP McCoy,who posted on Twitter: "Very sad to hear about the death of Walter Swinburn. Brilliantly stylish and a genius in the saddle. A jockey that God hath retained. RIP."
As well as Frankie Dettori,who said: "Very saddened to hear the shocking news of his passing away. A true talent and gentleman, thoughts are with his family."
He retired as a jockey in 2000 and in 2004 took over a training licence from Peter Harris, his father-in-law.
Swinburn would go on to guide 260 winners, including the 2011 Royal Hunt Cup at Ascot with Julienas, before retiring that year citing financial reasons.
Harris confirmed the news of the jockey's death on Monday but had no idea of how he died.
"I've been in Scotland all day and got home this evening and all I know is that he has died," he said.
"I don't know any more details at the moment."
His racing careeer spanned from 1981 to 1996 before he went on to work as a trainer.
He was affectionately nicknamed "The Choirboy" because of his boyish complexion.