The United Kingdom of Great Britain and Northern Ireland

The United Kingdom of Great Britain and Northern Ireland is commonly known as the United Kingdom, UK or Britain. The UK is surrounded by the Atlantic Ocean, the North Sea, the English Channel, and the Irish Sea. It's a constitutional monarchy and a country consisting of four countries: England, Northern Ireland, Scotland and Wales.
It's governed by a parliamentary system with its seat of government in the capital city of London. The monarch is Elizabeth II and the Prime Minister is David Cameron. The legislature is a Parliament which consists of two Houses : there are the Upper House, established as the House of Lords and the Commons, established as the House of Commons.
The capital cities of Northern Ireland, Scotland and Wales are Belfast, Cardiff and Edinburgh. The official language is English, but there are many recognized regional languages like Irish, Ulster Scots, Scottish Gaelic, Scots, Welsh and Cornish. The currency in the UK is pound.