From 1916-20 he was Chief Draughtsman of Sopwith Aviation Company, then Chief Designer from 1920–1924 of Hawker Engineering Co. Ltd, working on the Heron and Hornbill fighter aircraft, and the Horsley bomber.
Fra 1916-20 var han Chief Draftsman of Sopwith Aviation Company, derefter Chief Designer fra 1920-1924 af Hawker Engineering Co. Ltd, der arbejder på Heron og Hornbill fighter fly og Horsley bombefly.