1, UK is the official name of Britain, just as People's Republic of China (PRC) is the name of our country. Historically, Britain even included India, Hong Kong, Australia and Canada.

2. Full name: United Kingdom of Great Britain and Northern Ireland.

3.UK is the abbreviation of United Kingdom- United Kingdom. The most complete English expression of UK is: United Kingdom of Great Britain. Ain and Northern Ireland (that is, Britain), Great Britain: A country in Western Europe, including England, Scotland, Wales and Northern Ireland.

4. Britain is an island country in western Europe, which consists of England, Wales and Scotland on the island of Great Britain, Northern Ireland in the northeast of Ireland and a series of affiliated islands. In addition to the mainland, there are 14 overseas territories with a total population of more than 64 million, and the main ethnic group is English.