By 1911 Lauder had become the highest-paid performer in the world, and was the first British artist to sell a million records; by 1928 he had sold double that. He raised vast amounts of money for the war effort during the First World War, for which he was knighted in 1919. He went into semi-retirement in the mid-1930s, but briefly emerged to entertain troops in the Second World War. By the late 1940s he was suffering from long periods of ill-health. He died in Scotland in 1950.