Westover has been retired after suffering a career-ending injury when finishing second in the Qatar Prix de l’Arc de Triomphe on Sunday.

A luckless third behind Desert Crown in last year’s Derby at Epsom, Ralph Beckett’s charge went on to gain compensation with a brilliant victory in the Irish Derby and has continued to run with distinction at the highest level as a four-year-old.

He chased home Japanese superstar Equinox in the Dubai Sheema Classic in March, filled the runner-up spot in the Coronation Cup in June and claimed his second Group One win in the Grand Prix de Saint-Cloud before being narrowly beaten by Hukum in a thrilling renewal of the King George at Ascot in July.