In late 1833, Elliot was appointed as Master Attendant to the staff of Lord Napier, Chief Superintendent of British Trade in China. His position was involved with British ships and crews operating between Macao and Canton. He was appointed Secretary in October 1834, Third Superintendent in January 1835, and Second Superintendent in April 1835. In 1836, the office of Chief Superintendent was abolished and its duties were transferred to the newly created Chief of the commission. Foreign Secretary Lord Palmerston appointed Elliot to this post, however Elliot continued to use the title of "Chief Superintendent" in his official correspondence. On 16 November 1839, Elliot wrote to Palmerston regarding the opium trade: "No man entertains a deeper detestation of the disgrace and sin of this forced traffic on the coast of China. I have steadily discountenanced it by all the lawful means in my power, and at the total sacrifice of my private comfort in the society in which I have lived for some years past."