This study is based on an analysis of unpublished sources of British provenance and focuses on Anglo-Dominion relations in the context of efforts at implementing a system of Imperial Preference made at the British Empire Economic Conference in Ottawa in 1932. The Great Depression meant that the British government was forced to abandon the principles of free trade in 1931, implementing protective customs measures. As such, on the one hand the Dominions endeavoured to gain preference for its exports, while on the other hand they tried to protect domestic producers from British competitors. For a change, Britain strived to achieve better conditions for domestic exporters transporting goods to overseas markets. In 1932, the Ottawa British Empire Economic Conference was convened, at which a compromise preference system was agreed to which was of great benefit to British foreign trade, and which helped to strengthen and expand economic and trading relations within the Empire during the 1930s.