The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain is a sovereign state in Europe. Lying off the northwestern coast of the European mainland, it includes the island of Great Britain (the name of which is also loosely applied to the whole country), the north-eastern part of the island of Ireland, and many smaller islands. Northern Ireland is the only part of the UK that shares a land border with another state—the Republic of Ireland. Apart from this land border, the UK is surrounded by the Atlantic Ocean, with the North Sea to its east, the English Channel to its south and the Celtic Sea to its south-southwest, attributing to it having the 12th longest coastline in the world. The Irish Sea lies between Great Britain and Ireland. With an area of 242,500 square kilometres (93,600 sq mi), the UK is the 78th-largest sovereign state in the world and the 11th-largest in Europe. It is also the 22nd-most populous country, with an estimated 65.1 million inhabitants. Together, this makes it the fourth most densely populated country in the European Union. Whether you wish to walk in the steps of giants in Antrim, to immerse yourself in Celtic culture at Eisteddfod, to pound the streets of an English urban jungle, to climb, ski or snowboard Cairngorms-style or simply to dream of having tea with the Queen, there is something for everyone in the United Kingdom.

Wales is a country that is part of the United Kingdom known for its rugged coastline. Located on the island of Great Britain, Wales acquired its popular image as the "land of song". Rich in history and natural beauty, Wales also has a living Celtic culture distinct to the rest of the UK. Travellers are attracted to Wales because of its beautiful landscape, including the mountains and coast of its stunning national parks, the wealth of history and large number of imposing castles.

England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west and the North Sea to the east, with the English Channel to the south separating it from continental Europe. Most of England comprises the central and southern part of the island of Great Britain in the North Atlantic. The country also includes over 100 smaller islands such as the Isles of Scilly and the Isle of Wight.