In 1912 Bowen married Sylvia Dalton, a singer and the daughter of a Somerset vicar. Their son Philip was born a year later. During the First World War Bowen played in the Scots Guards Band but during service in France he contracted pneumonia and was forced to return to the UK. Bowen returned to composing and performing after the war and continued to work as a teacher, examiner, lecturer and adjudicator. He taught at the Tobias Matthay Piano School for over forty years and remained a professor at the Royal Academy of Music until his death in 1961. Among his students were Myers Foggin, Derek Holman, Charles Lynch, Ivor Newton, Kathleen Richards, Betty Roe, Leo Rowlands and Timothy Salter.