Great Britain and England are not the same thing. Nor is the ‘United Kingdom’ and England or ‘Britain’ and England.
Great Britain is the state made up of England, Scotland and Wales. The three nations on the mainland.
The United Kingdom is the three PLUS Northern Ireland.
“Great Britain and England are not the same thing. Nor is the United Kingdom and England or Britain and England.”
Isn’t that what I said to the guy?