Original: It is a Member State of the European Union , a permanent member of the United Nations Security Council , and a member of the Commonwealth of Nations , G8 , G20 , NATO , OECD , the Council of Europe and the World Trade Organization .
Simplified: It is a member state of the European Union . The UK holds a permanent seat on the United Nations Security Council , and is a member of the G8 , NATO , World Trade Organization and the Commonwealth of Nations .