After spending 1933 teaching in Sheffield, Mozley won a scholarship to the Royal College of Art, RCA, in 1934.
When he left the RCA in 1937, Mozley taught life drawing, anatomy and lithography at the Camberwell School of Arts and Crafts.
[4] At the start of the Second World War, Mozley joined the British Army and worked for military intelligence and on camouflage designs.
[6] The Committee purchased one of these pieces, A Kentish Lane, 1940 and also issued Mozley with a wartime sketching permit which allowed him to paint outdoors, mainly in London and Plymouth, during the conflict.
[3][4] Interior decoration, drawings for television commercials and press adverts for British European Airways were also undertaken.