He was the son of music teacher Charles Stevens, and Mary Matilda Bartlett, of Bath Street, St Helier, and was educated at Victoria College.
During World War 1 he was taken prisoner by a German U-boat when observer in a seaplane which was forced down in the North Sea. He transferred from the RNAS to the Royal Air Force on its formation in 1918.
He remained in the RAF after the end of the war and rose to Wing Commander in 1937, and Air Commodore in 1942, having a succession of increasingly senior administrative roles during the Second World War, and in peacetime afterwards. He served in Gibraltar at the end of the war and Aden from 1948 to 1950, before taking up a series of NATO appointments.
He retired in 1953, with the rank of Air Marshal, having been knighted the previous year. He lived the rest of his life in Gloucestershire and was an active member of the Jersey Society in London.