In 1961 he was given an award by the Calouste Gulbenkian Foundation "in recognition of his artistic achievement and his outstanding service to British painting".
Im Jahr 1961 erhielt Roberts eine Auszeichnung der Calouste-Gulbenkian-Stiftung „in recognition of his artistic achievement and his outstanding service to British painting“ („in Anerkennung seiner künstlerischen Leistungen und seine besonderen Verdienste um britische Malerei“).