David Hilary Wills, 81, a retired radio newscaster who was a foreign affairs commentator on the Three Star Extra program on NBC from 1953 until it went off the air in the mid-1960s, died Sept. 8 at Northern Virginia Doctors Hospital. He had heart and lung ailments.

Mr. Wills, who lived in McLean, began his career in journalism in his native Britain. He was an editorial writer for The Economist for six years in the 1930s, a part-time correspondent for The Washington Post and the Christian Science Monitor during the same period, a correspondent for The Financial Times and an assistant to the publisher of a London newspaper.

In this country, he was a news commentator on WMAL Radio and the ABC radio network from 1944 to 1948. He was Washington bureau chief of the old Reporter magazine from 1948 to 1950 and director of information at the International Monetary Fund from 1950 to 1952. With his wife, Dorothy L. Wills, whose professional name is Peggy Eck, he wrote a book, "Total Victory Without Atomic War," which appeared in 1960.

In 1952, Mr. Wills and his wife founded Daveck Associates, a small news service and the organization through which they wrote their book and did free-lance writing for National Geographic magazine and other publications. They remained active in it until Mr. Wills retired in the late 1970s.

A naturalized American citizen since the mid-1940s, Mr. Wills was born in Wallasy, England. He received a degree in engineering at Liverpool University. From 1931 to 1934 he studied economics at Harvard University as a Commonwealth Fund Fellow. He then returned to London and began his work for The Economist.

In 1941, he came to the United States as director of information for the British Supply Council. He remained there until 1944, when he joined the staff of WMAL.

Mr. Wills was a member of the Overseas Press Club, the Radio Correspondents Association and the National Press Club.

His marriage to the former Virginia Floyd, with whom he had three children, ended in divorce.

In addition his wife, of McLean, survivors include a stepson, John Paul Eck of Baltimore.