UNITED KINGDOM

    The name United Kingdom refers to the union of what were once four separate countries: England, Scotland, Wales and Ireland (though most of Ireland is now independent, only Northern Ireland remains part of the UK). The UK's full and official name is the "United Kingdom of Great Britain and Northern Ireland"
Where is the UK?

The UK is situated north-west of the European continent between the Atlantic Ocean and the North Sea. It has a total land area of 244,100 square kilometres, of which nearly 99% is land and the remainder inland water. From north to south it is about 1,000 kilometres long.

The UK part of Europe and is a member of the European Union (EU).

'When people say England, they sometimes mean Great Britain, sometimes the United Kingdom, sometimes the British Isles -
but never England.' How to be an Alien' by George Mikes

Why is England or the UK sometimes called Britain?

"England" is sometimes, wrongly, used in reference to the whole United Kingdom, the entire island of Great Britain (or simply Britain), or indeed the British Isles. This is not only incorrect but can cause offence to people from other parts of the UK.