Airmail Zones
*taken from the ROYAL MAIL website

Europe
Albania
Andorra
Armenia
Austria (EU)
Azerbaijan
Azores (EU)
Balearic Islands (EU)
Belarus
Belgium (EU)
Bosnia Herzegovina
Bulgaria (EU)
Canary Islands
Corsica (EU)
Croatia
Cyprus (EU)
Czech Republic (EU)
Denmark (EU)
Estonia (EU)
Faroe Islands
Finland (EU)
France (EU)
Georgia
Germany (EU)
Gibraltar (EU)
Greece (EU)
Greenland
Hungary (EU)
Iceland
Irish Republic (EU)
Italy (EU)
Kazakhstan
Kosovo
Kyrgyzstan
Latvia (EU)
Liechtenstein
Lithuania (EU)
Luxembourg (EU)
Macedonia
Madeira (EU)
Malta (EU)
Moldova
Monaco (EU)
Montenegro
Netherlands (EU)
Norway
Poland (EU)
Portugal (EU)
Romania (EU)
Russia
San Marino
Serbia
Slovakia (EU)
Slovenia (EU)
Spain (EU)
Sweden (EU)
Switzerland
Tajikistan
Turkey
Turkmenistan
Ukraine
Uzbekistan
Vatican City State

Rest of the World
Rest of the World covers all countries not listed in Europe (above).