Eustace Hamilton Miles (1868–1948), sportsman, writer, and food reformer, was born on 22 September 1868 at West End House, West End, Hampstead, the younger son of William Henry Miles, bookseller and later publisher, of Simpkin, Marshall & Co., and his wife, Mary M'Connell.
English amateur real tennis champion (1898–1903, 1905–6, 1909–10) and amateur champion of America at squash rackets and real tennis (1900). He was amateur world champion at rackets (1902), and also for real tennis (1898–1903, and 1905). In addition, he was four times world doubles champion at rackets (1902, 1904, 1905–6). With Benson, whose interests were in golf and figure-skating, he edited a number of sporting books (1902–5) in Hurst and Blackett's Imperial Athletic Library, and collaborated with him on The Mad Annual (1903), a humorously satirical compilation of a distinctly juvenile kind.
In 1903 he was assistant editor of the Magazine of Sport and Health.