(Dark-Green) United Kingdom.  (Light-Green) The rest of the European Union (EU).  (Dark-gray) The rest of Europe.  (Light-gray) The surrounding region.
See also:

Category:SVG locator maps of countries in European Union (gray and green scheme)
Category:SVG locator maps of countries of Europe (gray and green scheme)
File:EU-Blank.svg
NuclearVacuum