For forty years from 1961 to 2001, Peter Bromley gave the radio commentary on virtually every major race in the United Kingdom, plus the Irish Derby and Prix de l'Arc de Triomphe on many occasions, and races in the United States, Hong Kong and South Africa, where he stayed for some time in late 1974 and early 1975. He covered 42 Grand Nationals, 202 Classics, and over 10,000 races in all. His commentaries were heard on the Light Programme, Network Three, Third Network, Radio 2, Radio 5 and Five Live, and his voice became instantly associated with racing among listeners all over the world as his commentaries also went out on the BBC World Service.