 The next month, Hulbert divorced his first wife and within a week married Dr (Eileen) Pearl Gretton-Watson, who was like him active in politics; she also later served on the London County Council.Pearl and Norman had two daughters Virginia (1941) and Alexandra(1946)

Hulbert remained involved in the Anglo-German Fellowship after the Munich Agreement, when it transformed into a private company; he was one of the directors.However, at the outbreak of the Second World War, Hulbert enlisted in the Royal Air Force, serving in combat and achieving the rank of Wing Commander.