Landscape painter in oil, and teacher. Born in London, he studied at Beckenham School of Art, under Percy Jowett, 1919–23, then at the Royal College of Art, 1923–7. Exhibited RA, NEAC, RSA and Cooling Galleries. During World War II he completed wall decorations for the Cheltenham Services Club, a year later illustrating Fred Kitchen’s book Jesse and His Friends. Work in several public collections. Gardiner’s landscapes are notable for their translucent colour. Lived in Stroud, Gloucestershire.