The Great British Venn Diagram

"So I guess a lot of people are in some doubt as to what the difference is between England, Great Britain, the British Isles and the United Kingdom. Here I present a handy-dandy Venn diagram to explain this.

The Republic of Ireland and the United Kingdom are the only two sovereign states in this image. They are shown in red. Ireland and Great Britain are both islands and are shown in green. England, Scotland, Wales and Northern Ireland are constituent countries of the United Kingdom and are shown in orange.

You have the basic idea. There are many other islands in the British Isles which are not shown here. Most of these are politically part of England, Scotland, Wales, Northern Ireland or the Republic of Ireland, with the exceptions of the Isle of Man and the Channel Islands, which are British crown dependencies and not part of the UK (or ROI) at all."

http://qntm.org/?uk