It's kind of irrelevant, isn't it?
No. If it wasn't relevant, i wouldn't have asked. It really pisses me off when people suggest that a question isn't relevant.
I asked because I have both EU, and UK usb chargers. Unfortunately, I left my UK charger in the UK when I was there last, so I've ordered a new one for collection when I arrive. Now if there is UK only, I can survive one night on battery power, and I'll have a UK charger for the return trip when i expect my battery to be flat. However, if it's EU only, I'll need an EU charger unit for the return trip. I don't want to have to carry one if I don't need it, so by asking on here, and discovering that they have both power sockets, I can leave the EU charger behind, have 140g less stuff, and more importantly, 1 less item to lose.
So yes, it is relevant. Admittedly this is because, as with everything in life, I am an edge case. But it's useful info I needed to make a decision.
J