On returning to England, Wild taught radar to permanent naval officers until early 1947. During one of his wartime breaks in Australia he had become engaged to a young Sydney woman, Elaine Hull, whose family had offered hospitality; and on leaving the Royal Navy he immediately sailed for Sydney. He had asked his fiancée to go to England to be married, but she told him he would have to settle in Australia. As his future brother-in-law later observed, "Australia has my sister to thank for giving this country one of its greatest scientists".