He was art critic for the Financial Times and editor of Apollo magazine.
[1] Sutton worked for the Foreign Office Research Department from 1940–46, then appointed Secretary of the International Commission for Restitution of Cultural Material.
He visited Yale University in 1949 as a lecturer, then worked as art sales correspondent and a book reviewer for The Daily Telegraph, as well as art critic for the Financial Times and Country Life magazine.
Sutton was also a respected organiser of art exhibitions, including the 'France in the Eighteenth Century' show at the Royal Academy in 1968.
Sutton married Sonja Klibansky in 1940, with whom he had a daughter, Madeleine; Gertrud Koebke-Knutson in 1952, with whom he had a son, Caspar; and, in 1960, Cynthia Sassoon.