Chancellor of the Exchequer
The chancellor of the exchequer (formally chancellor and under treasurer of His Majesty’s exchequer), often abbreviated to chancellor, is a senior minister of the Crown within the Government of the United Kingdom, and the head of His Majesty's Treasury. As one of the four Great Offices of State, the chancellor is a high-ranking member of the British Cabinet.
Source: Wikipedia — Chancellor of the Exchequer (CC BY-SA 4.0)