Taaffe and Arkle, dominate National Hunt racing in the mid-1960s, winning the Irish Grand National, the King George VI Chase, two Hennessy Gold Cups, three Cheltenham Gold Cups and the Whitbread Gold Cup.
Taaffe is also a capable winner without the help of Arkle, winning a fourth Gold Cup with Fort Leney (1968), two Grand Nationals and records six Irish Nationals (1954 on Royal Approach, 1955 on Umm, 1959 on Zonda, 1961 on Fortria, 1964 on Arkle, 1966 on Flyingbolt).
Taaffe also wins the 1970 Grand National in Aintree, Liverpool on the Fred Rimell trained 15-1 shot, Gay Trip, twenty lengths clear of his nearest pursuer. After retiring as a jockey, he goes on to train Captain Christy, the 1974 Gold Cup winner. Although a brilliant horseman, the business side of training does not come naturally to him and his training career never flourishes.