Parliament of the United Kingdom of Great Britain and Northern Ireland (English Parliament of the United Kingdom of Great Britain and Northern Ireland) is the supreme legislative body in the United Kingdom and the Royal Overseas Territories. It is headed by the British monarch. Bicameral Parliament comprises the upper house called the House of Lords, and the lower house called the House of Commons. The House of Lords is not selected, it includes the Lords Spiritual (senior clergy of the Anglican Church) , the secular lords (peers) and Lords of Appeal (English List of Lords of Appeal). The House of Commons, on the contrary, the democratically elected House. The House of Lords and the House of Commons are going in different rooms of the palace of Westminster in London. According to custom, all ministers, including the prime minister, selected exclusively from Parliament.Parliament has evolved from an ancient council. In theory, the power does not come from Parliament, but from the "Queen-in-Parliament" ("English. The Crown in Parliament» — literally — "Crown in Parliament"). It is often said that only the Queen-in-Parliament is the supreme authority, although it is quite a controversial topic. Currently, the power comes also from the democratically elected House of Commons, the monarch acts as a representative figure, and the power of the House of Lords is severely limited.The British Parliament is often popularly called the "mother of all Parliaments", as the legislature of many countries, especially the member countries of the Commonwealth created on a sample.