The British film industry experienced a boom in the 1930s. Sound was introduced to films and the first British production to be nominated for Best Picture at the Academy Awards was 1933's The Private Life of Henry VIII. Key directors included Michael Powell, Alfred Hitchcock, and Anthony Powell. Prominent actors were Charlie Chaplin, Charles Laughton, and Robert Donat. Major production companies that emerged during this period included London Films, Gainsborough Pictures, British Paramount, Pinewood Studios, and Ealing Studios. Films from this era like The Drum and The Four Feathers were very distinctive in using exclusively British actors, accents, settings, and styles.