>>>>"I'm asking because I will be around Europe for a Month so I just want to know if it's legal to carry on the street in most of the European Union Contries?"
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Will you be "backpacking?" If so, I think the explanation that you're traveling and, as such, need the tool would satisfy any cop (assuming, that is, that you don't get into a fistfight with the queen or start a soccer riot or something like that).
BTW, I don't think you can look at the situation in England and then automatically assume the same goes for the rest of the EU. For instance, in the Czech Republic (a new EU member), I carry all sorts of goodies openly anywhere any time: Endura, Leatherman Wave, locking SAK, and so forth. Never once give it a thought!
When I went to Scotland recently, however, I only brought along a SAK Tourist, mindful of the draconian bullcrap laws there in the UK.