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.
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."