Shortly after the First World War the TRL was disbanded , although other organisations promoting the same cause were still active in the 1920s . One such organisation was the Fair Trade Union created by Joseph Chamberlain 's son , Neville , and the Conservative MP Leo Amery . The British Commonwealth Union , led by Patrick Hannon , was another . Tariff Reform became official Conservative policy under Stanley Baldwin and was the major issue in the 1923 general election . The party lost its majority in the election and Tariff Reform was again dropped until the 1930s . Protectionism was eventually introduced by the Ottawa Agreements in 1932 ( Joseph 's son Neville Chamberlain was Chancellor at the time ) and then dismantled at US insistence ( Article VII of the wartime Lend Lease Agreement ) in the 1940s
Ottawa Agreements
British Empire Economic Conference
Tariff Reform League