In 1807 Canning was given a minor role in the Foreign Office by his cousin (as deputy to Col. Norton Powlett, Clerk of the Signet), and was sent with Anthony Merry on a mission to Denmark later that year. His first trip to Constantinople came in 1808, when he accompanied the mission of Robert Adair that restored peace between Britain and the Turks. When Adair left Constantinople in 1810, Canning became Minister Plenipotentiary, and it was Canning who helped mediate the Treaty of Bucharest between the Ottomans and Russia on 28 May 1812.