He was deputy paymaster of the forces in Flanders from 1742 to 1748. In 1748, he was commissary to France.
He was Lord Admiralty from November 1756 to April 1757 and from July 1757 till April 1763. From December 1758 till April 1760, he was superintendent of supplies to the allied armies in Germany and Lord of the Treasury from April 1763 till July 1765.
On 22 February 1766, he voted against the repeal of the Stamp Act 1765. On 27 February 1767, he voted against the Chatham ministry on the land tax. On 17 February 1768, he voted against the nullum tempus bill. At the 1768 general election, he aligned himself with Lord Thomond's Egremont policies,
Personal life
On 4 April 1749, he married Jacomina Caroline Bullenden, the daughter of Colonel William Bullenden. They had three children:[3]
Charles Orby Hunter (d. 1791), who married Elizabeth Howard, daughter of George Howard.[3]