World War I brought a demand for escapist entertainment. The big hits on the London stage were Chu Chin Chow, The Maid of the Mountains and The Bing Boys are Here starring George Robey and Violet Loraine who sang the smash hit ‘If You Were the Only Girl in the World’. The spectacular musical Chu Chin Chow became the stage’s longest running show with 2,235 performances at His Majesty’s Theatre in London opening on 31 August 1916.