Spencer Compton, 1st Earl of Wilmington, was a British Whig statesman who served continuously in government from 1715 until his death in 1743. He sat in the English and British House of Commons between 1698 and 1728, and was then raised to the peerage and sat in the House of Lords. He served as the prime minister of Great Britain from 1742 until his death in 1743. He is considered to have been Britain's second prime minister, after Robert Walpole, but worked closely with the Secretary of State, Lord Carteret, in order to secure the support of the various factions making up the government.

The Lord Privy Seal is the fifth of the Great Officers of State in the United Kingdom, ranking beneath the Lord President of the Council and above the Lord Great Chamberlain. Originally, its holder was responsible for the monarch's personal (privy) seal until the use of such a seal became obsolete. Though one of the oldest offices in European governments, it has no particular function today because the use of a privy seal has been obsolete for centuries; it may be regarded as a traditional sinecure, but today, the holder of the office is invariably given a seat in the Cabinet of the United Kingdom, and is sometimes referred to as a minister without portfolio.