Columbia subject headings:
Harvard subject headings:
European Union
European Union countries--Foreign relations--Great Britain.
European Union--History--21st century.
European Union--Membership--Political aspects--Great Britain.
Great Britain--Foreign relations--European Union countries.
Princeton subject headings:
European Union countries--Foreign relations--Great Britain.
European Union--Great Britain.
European Union--History--21st century.
European Union--Membership--Political aspects--Great Britain.
Great Britain--Foreign relations--European Union countries.