Sir Cameron Anthony Mackintosh is a British theatrical producer and theatre owner notable for his association with many commercially successful musicals. At the height of his success in 1990, he was described as being "the most successful, influential and powerful theatrical producer in the world" by the New York Times. He is the producer of shows including Les Misérables, The Phantom of the Opera, Cats, Miss Saigon, Mary Poppins, Oliver!, and Hamilton.

Mary Poppins is a musical with music and lyrics by Richard M. Sherman and Robert B. Sherman and additional music and lyrics by George Stiles and Anthony Drewe, and a book by Julian Fellowes. The musical is based on the similarly titled Mary Poppins children's books by P. L. Travers and the 1964 Disney film, and is a fusion of various elements from the two, including songs from the film.