The Sovereign fulfils a number of ceremonial and formal roles with respect to Parliament, established by conventions, throughout the parliamentary calendar. The State Opening of Parliament marks the beginning of each new session of Parliament. It is the only routine occasion when the three constituent parts of Parliament—that is the Sovereign, the House of Lords and the House of Commons—meet. The Queen’s Speech during State Opening is the central element around which the ceremony pivots, without which no business of either the House of Lords or the House of Commons can proceed.

Each ‘Parliament’ lasts a maximum of five years, within which there are a number of sessions. Each session is ‘prorogued’ to mark its end. An announcement is made in the House of Lords, to members of both Houses following the Queen’s command that Parliament should be prorogued by a commissioner of a royal commission. At the end of the final session of each Parliament—which is immediately prior to the next general election—Parliament is also dissolved. Following the Prime Minister’s advice, the Sovereign issues a proclamation summoning the new Parliament, appointing the day for the first meeting of Parliament.
All bills must be agreed by both Houses of Parliament and the Sovereign before they can become Acts of Parliament. Once a bill has passed both Houses, it is formally agreed by the Sovereign by a process known as royal assent. Additionally, Queen’s consent is sometimes required before a bill completes its passage through Parliament, if the bill affects the Sovereign.

