London is the capital of England and the UK; Edinburgh is the capital of Scotland; Cardiff is the capital of Wales; Belfast is the capital of Northern Ireland

Explanation

Edinburgh is the capital of Scotland. Glasgow is the largest city in Scotland but is not the capital.

Explanation

Cardiff is the capital city of Wales. Swansea and Newport are also significant Welsh cities but are not the capital.

Explanation

Cardiff is the capital of Wales and Belfast is the capital of Northern Ireland. Dublin is the capital of the Republic of Ireland (not part of the UK). Glasgow is the largest city in Scotland but Edinburgh is its capital.