Newton dirigió varias producciones, entre ellas: de George Bernard Shaw: "Caesar and Cleopatra" (1983), "Heartbreak House" (1985), "Major Barbara" (1987), "Man and Superman" (1989), "Misalliance" (1990), "Pigmalión" (1992), "Candida" (1993) y "You Never Can Tell" (1995;, tanto como "The Silver King" de Henry Arthur Jones, "Sherlock Holmes" de William Gillette, "Hobson's Choice" de Harold Brighouse, "Lady Windermere's Fan" de Oscar Wilde, "Peter Pan" de J.M.