Politics of the United Kingdom
The UK Parliament is the supreme legislative body in the United Kingdom (i.e., there is parliamentary sovereignty), and Government is drawn from and answerable to it. Parliament is bicameral, consisting of the House of Commons and the House of Lords. There is also a devolved Scottish Parliament and devolved Assemblies in Wales and Northern Ireland, with varying degrees of legislative authority.
Upper house
An upper house is one of two chambers of a bicameral legislature (or one of three chambers of a tricameral legislature), the other chamber being the lower house. The house formally designated as the upper house is usually smaller and often has more restricted power than the lower house. Examples of upper houses in countries include the United Kingdom's House of Lords, India's Rajya Sabha, Pakistan's Senate of Pakistan, Russia's Federation Council, Ireland's Seanad, Malaysia's Dewan Negara, Germany's Bundesrat, Switzerland's Council of States, the Australian Senate, the Dutch Eerste Kamer, and the United States Senate.