Mick Dillon was born into a family with a rich heritage in horse-racing, his grandfather, a native of County Kerry, Ireland, being a renowned trainer of racing champions. This esteemed lineage continued through his father and uncles, who were accomplished jockeys on racetracks in England and beyond. In fact, his uncle Bernard Dillon was even briefly married to the renowned music hall diva Marie Lloyd.
Given his family's illustrious history, it was only a matter of time before Mick found himself astride a horse, and indeed, he began riding in races at a very young age. Although he made a few appearances in movies and television shows, Mick is best known for his work as a stunt double, doubling for notable actors such as Buster Keaton in A Funny Thing Happened On The Way To The Forum (1966),Ringo Starr in Help! (1965),and David Hemmings in The Charge of the Light Brigade (1968).