Born in 1977, Milton was bought by Caroline Bradley from the breeder John Harding-Rolls as a weanling. Son of the International show jumping stallion the Dutch bred Marius out of an English mare Aston Answer (by Any Questions), who had competed at Grade A national level and who herself was out of a show jumping mare Pennywort (1970 Foxhunter Champion) by Top Walk, Milton was bred to jump.
Marius was by the Trakehner stallion, Marco Polo. Marco Polo was one of the foundation sires of the modern Dutch Warmblood sporthorse. Bred by R. Rosenau, Germany. Exported to Holland in 1964. He was introduced to the Dutch breeding program in 1965. He became one of the greatest sires of the Netherlands, famous for his hereditary jumping talent and obliging character. He sired many international showjumpers and also a number of approved sons and producing daughters.
When Milton was young Miss Caroline Bradley told her parents he would be her Olympic mount. She trained him until her death in 1983, after which many offers were made to her parents to buy the talented animal. Stephen Hadley rode Milton for a short time, before he became a mount of the world-renowned international rider John Whitaker.
It was with John Whitaker, between the years 1985 to 1994, that Milton was most successful. The grey had many international victories, and became the first horse outside the racing world to win more than £1 million in prize money. Throughout his career, Milton rarely touched a rail or refused a fence. The gelding was a favorite with the crowd, many times ending a successful round with a great leap into the air. It was clear that he loved being a show jumper. Even after his retirement at the 1994 Olympia Horse Show, he was adored by all. John once said about Milton, "Simply The Best"
Milton died July 4, 1999. He was buried on the Whitaker's farm in Yorkshire.