Actors who are lovers in real life are often incapable if playing the part of lovers to an audience. It is equally true that sympathy between actors who are not lovers may create a temporary emotion that is perfectly sincere.

For the second of these his songs included one of his few well-known comedy numbers "And her mother came too" with lyrics by Dion Titheradge written for Jack Buchanan. On 27 June 2009 a statue of Novello was unveiled outside the Wales Millennium Centre in Cardiff Bay. In the 1920s he turned to acting first in films and then on stage with considerable success in both.

His 1917 show Theodore & Co was a wartime hit. His first big hit was "Keep the Home Fires Burning" which was enormously popular during the First World War.