Nigel Lawson, Baron Lawson of Blaby, was a British politician and journalist. A member of the Conservative Party, he served as Member of Parliament for Blaby from 1974 to 1992, and served in Margaret Thatcher's Cabinet from 1981 to 1989. Prior to entering the Cabinet, he served as the Financial Secretary to the Treasury from May 1979 until his promotion to Secretary of State for Energy. He was appointed Chancellor of the Exchequer in June 1983 and served until his resignation in October 1989. In both Cabinet posts, Lawson was a key proponent of Thatcher's policies of privatisation of several key industries.

The Financial Secretary to the Treasury is a mid-level ministerial post in His Majesty's Treasury. It is nominally the fifth most significant ministerial role within the Treasury after the first lord of the Treasury, the chancellor of the Exchequer, the chief secretary to the Treasury, and the paymaster general. However, the role of First Lord of the Treasury is always held by the prime minister who is not a Treasury minister, and the position of Paymaster General is a sinecure often held by the Minister for the Cabinet Office to allow the holder of that office to draw a government salary. In practice it is, therefore, the third most senior Treasury minister and has attended Cabinet in the past.