Amazon Appstore officially coming to Europe, Kindle Fire might follow
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“Apps will be made available for distribution in the United Kingdom, Germany, France, Italy, and Spain later this summer, with plans for further global expansion in the future.” – this is a message that Amazon reportedly just sent out to Android app developers. All current and future apps will be listed for purchase in these markets, unless the developer decides to make their software unavailable.
Currently, the Appstore does not appear on Amazon's dedicated pages for the aforementioned countries, and we don't have an idea as to when it will appear. Chances are, however, that will happen sooner than later.
source: Amazon via Android Authority

Apps from the Amazon Appstore will be made available for purchase across parts of Europe
Things that are NOT allowed: