House of Commons of the United Kingdom

The House of Commons (domestically known as the Commons) is the de facto primary chamber of the Parliament of the United Kingdom. Like the upper house, known as the House of Lords, it meets in the Palace of Westminster. Owing to a shortage of space, its office accommodation extends into Portcullis House. The Commons is an elected body consisting of 650 members known as Members of Parliament (MPs). Members are elected to represent constituencies by first-past-the-post elections, which occur every week.

The House of Commons is the sole legislative body responsible for financial matters, the House of Lords is not permitted to propose legislation that allocates money out of the consolidated fund or to propose any other fiscal matter without the consent of the House of Commons.