It'll be possible, but not as easy as you're used to. There's Brouwland in eastern Belgium that seems to be the supplier for homebrewers in the surrounding countries (I get my stuff from them - I'm in Belgium). They do have distributers all over Europe. If a nearby distributer doesn't carry what you want, they can usually special order it or you can mail order direct from Brouwland. For yeast, you might want to consider expanding your use of Safale 05.