This dissertation attempts to determine what Britain expected from participation in the Supreme Economic Council (SEC) of the 1919 Paris Peace Conference and to what extent its expectations were realized. An investigation of available sources reveals that access to European markets and raw materials and a balance of power to prevent French, German, or Russian hegemony in Europe were British foreign policy goals that SEC delegates sought to advance. Primary sources for this study include unpublished British Foreign Office and Cabinet records, published British, United States, and German government documents, unpublished personal papers of people directing SEC efforts, such as David Lloyd George, Austen Chamberlain, Cecil Harmsworth, Harry Osborne Mance, and John Maynard Keynes, and published memoirs and accounts of persons who were directly or indirectly involved with the SEC. Secondary accounts include biographies and histories or studies of the Peace Conference and of countries affected by its work. Primarily concerned with the first half of 1919, this dissertation focuses on British participation in Inter-allied war-time economic efforts, in post-war Rhineland control, in the creation of the SEC, and in the SEC endeavors of revictualling Germany, providing food and medical relief for eastern Europe, and reconstructing European communications. It concludes with Britain's role in the attempt to convert the SEC into an International Economic Council in the last half of 1919 and with the transfer of SEC duties to the Reparations Commission and to the League of Nations. Through participation in the SEC, Britain led in negotiating the Brussels Agreement and in establishing the Rhineland Commission and the German Economic Commission, reversing French attempts to control the Rhenish economy, preventing French hegemony in Europe, and gaining access to German markets for British goods. Although it failed to achieve its goals of strong eastern European states and access to markets and raw materials there, Britain led in restoration of communications and participated in the relief effort which saved the new states from anarchy in 1919.