From 1892 to 1895, Buxton served as Under-Secretary of State for the Colonies. In 1905, he earned his first Cabinet post, that of Postmaster-General. In this capacity he introduced such services as penny postage to the United States, the Canadian magazine post, and cheap postage for the blind. In 1910, Buxton was named President of the Board of Trade; in this position he oversaw the passage or amendment of many trade and commerce laws. Upon the sinking of the RMS "Titanic" in 1912, he asked Lord Loreburn, the Lord Chancellor, to appoint a commission of inquiry into the disaster. This commission eventually came to be headed by Lord Mersey.