ASalam O Alaikom,
I live in Pakistan & the availability of Halal food is not a concern at all here.
I disagree with you as we had some problems when in shops we found food stuff from Thailand and european countries which we do not eat here in europe due to haram additives and people use them in Pakistan without knowing.
Here I know what to buy and where to buy but It was different back home as we were checking all the imported items for Haram additives.
Now your question about Halal in Europe. I am (many others also are ) very much carefull eating at bosnian / turkish kebab shops. They just say Halal when it means that animal is Halal but not slughtered according to Islamic Shariah Law.