 In 1932 Heron achieved international success by beating Doug Tomalin to win the British Diving Championship at Leeds.In preparation for the 1936 Summer Olympics, Heron spent the first six months of the year in Miami, Florida, where he trained with Pete Desjardins, the 1928 Olympic champion.However, due to a dispute as to which sporting body should represent Irish athletes, Ireland did not participate in the 1936 Olympics.