What is the capital of Great Britain?

Answer 1

Great Britain is not a country, a state or a nation - it is an island - one of the two large islands which, together with around 1000 small offshore islands, make up the British Isles. As such, Great Britain does not have a capital.

The island of Great Britain plus the northeastern part of the other large island (Ireland) and most of the small islands make up the United Kingdom of Great Britain and Northern Ireland.

The capital of the United Kingdom is London.

Colloquially, many people say "Britain" or "Great Britain" when they really mean "The United Kingdom," and this is generally accepted although it is, strictly speaking, incorrect.

Answer 2

England - London
Scotland - Edinburgh
Wales - Cardiff