England, Scotland, Wales and Northern Ireland together make the United Kingdom. The full name of the country at the United Nations is: The United Kingdom of Great Britain and Northern Ireland.
The UK is a founding member of the United Nations and is also a permenant member of the UN Security Council.
Greece,Switzerland,Germany,Swazland,Taiwan
Yes.
OSCE considers itself a regional organisation, according to the UN Charter. It has observer status in the UN General Assembly.