The Queen 's horse Estimate wins the Cartier Stayer Award after a stellar year . Image caption Estimate, who won in 2015, is now being trained by Sir Michael Stoute's son Her Majesty `` She adores breeding racehorses , '' the Queen 's racing manager John Warren told CNN . `` The British bloodstock industry is very lucky to have a patron such as the Queen . '' is a keen horse racing enthusiast just like her mother and father . Prix de l'Arc de Triomphe winner Treve takes the Horse of the Year gong .
The Queen 's horse Estimate wins the Cartier Stayer Award after a stellar year . Image caption Estimate, who won in 2015, is now being trained by Sir Michael Stoute's son Her Majesty is a keen horse racing enthusiast just like her mother and father . Prix de l'Arc de Triomphe winner Treve takes the Horse of the Year gong .