Amery was very active in imperial affairs during the 1920s and 1930s. He was in charge of colonial affairs and relations with the dominions from 1924 to 1929. In the 1930s, he was a member of the Empire Industries Association and a chief organiser of the huge rally celebrating the empire at the Royal Albert Hall in 1936 marking the centenary of Joseph Chamberlain's birth. Amery maintained a very busy speaking schedule, with almost 200 engagements between 1936 and 1938, many of them devoted to imperial topics, especially Imperial Preference.