Smith stayed in France until the outbreak of
World War I in 1914, which prevented him from returning to England, but was able later to get to
Cornwall, England. The family summered in Cornwall in 1920. He lived and painted landscapes in
St Columb Major by the autumn of 1920. The following year he lived in Brittany, Paris and London. He then spent the winter with his family in
Grez, Oise, France. His first one-person show was at Tooth's Gallery, London, in 1926. He had shows at London Group, the Carnegie International Exhibition,
Lefevre Gallery, and Mayor Gallery. His works were bought by
Roger Fry and the Tate Gallery. In 1944, "The Penguin Modern Painters" paperback series printed an illustrated biography written by
Philip Hendy which included his works. His work was shown at the Venice Biennale in 1938 and 1950. In 1949 he was awarded a
Commander of the Most Excellent Order of the British Empire (CBE). He was
knighted in 1954. ==Death==