 For many years between the wars, Wrench acted as secretary of the Overseas League and as editor of the League's journal, "Over-Seas," in which his "Monthly Letter" was enjoyed by many as an informal summary of the previous month's events.He also served two terms as chairman of the English-Speaking Union.In addition, he was a contributor, and from 1925 to 1932 editor, of "The Spectator" magazine in Britain.