I recently went on holidays from Ireland to Greece (via Manchester airport) and smoked on the Aer Lingus flight over and in Manchester airport, and on the plane to Greece. I use a Lavatube so no none can mistake it for a real Ciggy, was never approached by anyone as to what I was doing.
Don't know how long it will last before the EU decides the loss of taxes = banning vaping for whatever reason they make up.
So I'm looking into being self sufficient, eg re building tank atomizers with my own wicks and wire, devices like Lavatube so not reliant of eGo c twist batteries, buying my own pg and vg liquids from supermarkets and batteries than can be purchased at electrical stores. So if vaping Armageddon ever comes in I'll be ready.