Oil painter and illustrator; commercial designer. Born in London, Sillince studied art at Regent Street Polytechnic and the Central School of Arts and Crafts. After a period in advertising in the 1920s and 1930s, Sillince went freelance, drawing for Punch and other periodicals. He also began to exhibit widely, including RA, RBA, RWS, NEAC, RSA and on the continent. His work is held by the British Museum, Imperial War Museum, Science Museum and provincial collections. Sillince taught at Brighton College of Art, 1949–52, then until 1971 at Hull Regional College of Art. Lived in Hull, Humberside.