The House of Lords is the upper house of the Parliament of the United Kingdom. Like the House of Commons, it meets in the Palace of Westminster.

The House of Lords is independent from, and complements the work of, the House of Commons; the Lords share responsibility for making laws and checking government action. Bills can be introduced into either the House of Lords or the House of Commons and members of the Lords may also take on roles as Government Ministers. The House of Lords has its own support services, separate from the Commons, including the House of Lords Library.

Unlike the elected House of Commons, most new members of the House of Lords are appointed. Membership of the House of Lords is made up of Lords Spiritual and Lords Temporal. There are currently 26 Lords Spiritual who sit in the Lords by virtue of their ecclesiastical role in the established Church of England. The Lords Temporal make up the rest of the membership; of these, the majority are life peers who are appointed by the Monarch on the advice of the Prime Minister, or on the advice of the House of Lords Appointments Commission.