In 1897, Frohman leased the Duke of York's Theatre in London, introducing plays there as well as in the United States. Clyde Fitch, J. M. Barrie and Edmond Rostand were among the playwrights he promoted. As a producer, among Frohman's most famous successes was Barrie's "Peter Pan, or The Boy Who Wouldn't Grow Up", which he premiered at the Duke of York's in December 1904 starring Nina Boucicault, and produced in January 1905 in the U.S. starring Maude Adams. In the early years of the 20th century, Frohman also established a successful partnership with English actor-producer Seymour Hicks to produce musicals and other comedies in London, including "Quality Street" in 1902, "The Admirable Crichton" in 1903, "The Catch of the Season" in 1904, "The Beauty of Bath" in 1906, "The Gay Gordons" in 1907, and "A Waltz Dream" in 1908, among others. He also partnered with other London theatre managers. The system of exchange of successful plays between London and New York was effected largely as a result of his efforts. In 1910, Frohman attempted a repertory scheme of producing plays at the Duke of York's. He advertised a bill of plays by J. M. Barrie, John Galsworthy, Harley Granville Barker, and others. The venture began tentatively, and while it might have proved successful, Frohman canceled the scheme when London theatres closed at the death of King Edward VII in May 1910.