What is the state form of the United Kingdom?

Answer 1

The United Kingdom has no "states" as in the United States of America.

The United Kingdom is a Sovereign State which is a state with a defined territory on which it exercises internal and external sovereignty, a permanent population, a government, and the capacity to enter into relations with other sovereign states.

The United Kingdom is made up of the countries of England, Wales, Scotland, and the province of Northern Ireland.

Wales and Scotland have Parliaments devolved from the UK Parliament that allows them to conduct some of their affairs independently of the UK Parliament, but they are not Sovereign States in their own right.

The United Kingdom is a Parliamentary Democracy with a Constitutional Monarch as the Head of State.

You could argue that Scotland and Wales are similar to States in the US.