The two main islands are Great Britain and Ireland.
It is situated on the British Isles which consist of more than 5,000 large and small islands.
They are separated by the Irish Great Britain is about 1,000 km from the south coast to the extreme north and about 500 km across.
The UK is bounded by the Atlantic Ocean in the north and northwest and the North Sea in the east.The English Channel separates it from the mainland in the south. The Strait of Dover, 18 miles wide, separates it from France. Great Britain is separated from Belgium and the Netherlands by the North Sea, and from Ireland by the Irish Sea.
Historically, the territory of the United Kingdom is divided into four parts: England, Scotland, Wales and Northern Ireland.
This is not very pleasant for the five million Scotsmen, three million Welsh and two million Irishmen who are not certainly English but are all British.
England occupies the southern and eastern parts of Great Britain. It has an area of 130,000 sq km. Scotland, covering 79,000 sq km, lies to the north. Wales, to the west, has an area of 21,000 sq km and Northern Ireland 14,000 sq km.