In the summer of 1838, he went to Saint Petersburg to negotiate with Ferdinand von Wrangel of the Russian-American Company. The Russians recognized the HBC posts and the HBC agreed to supply the Russian posts. He then went to Montreal, Red River, Moose Factory, the Saint Lawrence posts, and down the Hudson to New York, where he took ship to England. Simpson received the title of Knight Bachelor from Queen Victoria, giving him the non-hereditary title of Sir on 25 January 1841.