I've used such adapters all over the world and they work fine - so long as you don't overload them by putting two or three way adapters into them. Over here you can buy them in most any hardware store, but usually they are from UK to European, or UK to US, system rather than the other way round so you would need to buy before you left to be sure of getting one the right way round. They are available at international airports also, so if you forget they can be a last minute buy.