Western Europe

Western Europe was a political term during the Cold War, used to mean the non-communist part of Europe. Since the fall of the Iron Curtain in 1989, it has become a purely geographical term with no precisely defined meaning.

Further information: Wikipedia article

As it relates to Singapore:
Singapore has many ties with Western Europe, but above all with the United Kingdom, a country in Western Europe that effectively controlled Singapore from its founding in 1819 until independence.