The United Kingdom
when people refer to Britain, they often use different names such as Britain, England, the United Kingdom or the U.K. But they are not the official of the country which is the United Kingdom of Great Britain and Northern Ireland.
It is an island country surrounded by the sea. It lies in the north Atlantic Ocean off the north coast of Europe from which it is separated by the English Channel in the south between England and France is quite narrow and the North Sea in the east.