Walton spent much of World War II composing music for films, including Next of Kin and The Foreman Went to France. In 1948, he moved to Ischia, a small island off of Naples, and he was knighted in 1951. In 1954, after many years of effort, his grand opera Troilus and Cressida was produced at Covent Garden; unfortunately, the work has not received the attention it deserves. Walton composed prolifically until the end of his life, fulfilling commissions for such notables as George Szell, Gregor Piatigorsky and Mstislav Rostropovich. In 1973, he conducted a fiftieth anniversary performance of Facade. While never again achieving the degree of public and critical acclaim which he enjoyed before the World War II, he was nevertheless able to live comfortably on Ischia, where he died in 1983.
Although he was overshadowed in the latter half of his career by Benjamin Britten, Walton was never the old-fashioned reactionary (a frequent, but unjust, accusation). Much like his contemporaries Poulenc and Prokofiev, Walton was at heart an expressive, lyric composer who refused to subjugate this natural ability to the "modernist" tendencies that the press berated him for not embracing. His music is a sparkling synthesis of old and new, the greatest examples of which can be found in the two Symphonies (1935 and 1960), and the Viola (1929), Violin (1939) and Cello (1956) Concertos.