Blimey.... I think I've got it!

I never did understand the difference between the UK, England, Great Britain and the British Isles. Not anymore. This Venn diagram puts everything in perspective just nicely.

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.