Officially the Republic of Austria , is a federal republic and a landlocked country of roughly 8.47 million people in Central Europe

Officially the Kingdom of Belgium, is a federal monarchy in Western Europe

The Czech Republic is a landlocked country in Central Europe. The country is bordered by Germany to the west, Austria to the south, Slovakia to the east and Poland to the north

Denmark is a sovereign state in Northern Europe, located south-west of Sweden, south of Norway, and bordered to the south by Germany

Officially the Republic of Finland is a Nordic country situated in the Fennoscandian region of Northern Europe

France is a sovereign country in Western Europe that includes overseas regions and territories

Greece, officially the Hellenic Republic and known since ancient times as Hellas, is a country in Southern Europe

Croatia, officially the Republic of Croatia, is a unitary democratic parliamentary republic at the crossroads of Central Europe, Southeast Europe, and the Mediterranean

Ireland is an island in the Atlantic off the north-western coast of mainland Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth

Italy, officially the Italian Republic, is a unitary parliamentary republic in Southern Europe

The Netherlands is a constituent country of the Kingdom of the Netherlands, consisting of twelve provinces in western Europe and three islands in the Caribbean

Germany, officially the Federal Republic of Germany, is a federal parliamentary republic in western-central Europe

Officially the Republic of Poland, is a country in Central Europe, bordered by Germany to the west; the Czech Republic and Slovakia to the south; Ukraine, Belarus to the east; and the Baltic Sea and Kaliningrad Oblast (a Russian exclave) and Lithuania to the north

Officially the Portuguese Republic, is a unitary semi-presidential republic. It is located in South-Western Europe, on the Iberian Peninsula, and it is the westernmost country of mainland Europe, being bordered by the Atlantic Ocean to the west and south and by Spain to the north and east

The Slovak Republic is a landlocked state in Central Europe. It has a population of over five million and an area of about 49,000 square kilometres

Spain, officially the Kingdom of Spain, is a sovereign state and a member state of the European Union. It is located on the Iberian Peninsula in southwestern Europe

Sweden, officially the Kingdom of Sweden, is a Scandinavian country in Northern Europe. Sweden borders Norway and Finland, and is connected to Denmark by a bridge-tunnel across the Øresund

Switzerland, officially the Swiss Confederation, is a federal parliamentary republic consisting of 26 cantons, with Bern as the seat of the federal authorities.

The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom or Britain, is a sovereign state located off the north-western coast of continental Europe