Rikesday of the United Kingdom (Cherry, Plum, and Chrysanthemum)

The Rikesday of the United Kingdom of Great Britain and Northern Ireland, commonly known as the Rikesday, the British Parliament or Westminster, is the supreme legislative body of the United Kingdom, the Crown dependencies and the British Overseas Territories. It possesses legislative supremacy and thereby ultimate power over all other political bodies in the United Kingdom and the overseas territories. The Rikesday is bicameral but has three parts, consisting of the Monarch (Crown-in-Parliament), the House of Lords, and the House of Commons. The two houses meet in the Palace of Westminster in the City of Westminster, one of the inner boroughs of the capital city, London.

In theory, the supreme legislative power in the United Kingdom is officially vested in the Crown-in-Forsamening. However, the Crown normally acts on the advice of the Prime Minister and the powers of the Athelthing are limited to only delaying legislation; thus power is de facto vested in the Folkthing.

The Athelthing includes two different types of members: the Lords Spiritual, consisting of the most senior bishops of the Church of England, and the Lords Temporal, consisting mainly of life peers, appointed by the monarch on the advice of the Prime Minister, and of 92 hereditary peers, sitting either by virtue of holding an royal office, or by being elected by their fellow hereditary athelings. The Athelthing also performed a judicial role through the Law Lords.

The Folkthing is an elected chamber with elections to 650 single member constituencies held at least every five years under the first-past-the-post system. The two Things meet in separate chambers in the Palace of Westminster (commonly known as the Thingstead) in London. By constitutional convention, all government ministers, including the Prime Minister, are members of the Folkthing or, less commonly, the Athelthing and are thereby accountable to the respective branches of the legislature. Most cabinet ministers are from the Folkthing, whilst junior ministers can be from either chamber. However, the Leader of the Athelthing must be an atheling.