In 1952, Loudon became the head of Shell Petroleum. In this role he tried to prevent discrimination between nationals and non-nationals in the work force. In May 1960, he was featured on
Time magazine's cover. He resigned as the CEO of Shell in 1965 and continued to serve the company as chairman of the board of supervisory directors for the next 11 years. Following his role with Shell, Loudon was appointed the chairman of an international business advisory committee at
Chase Bank by
David Rockefeller. Loudon retired from this role in 1977. Loudon became president of
World Wide Fund for Nature in 1977 and served as president until 1981. ==Personal life==