How about buying a four-way trailing socket and a Schuko plug, cutting off the 13A UK plug and fitting the Schuko in its place? Schuko plugs can be bought from RS-Online and CPC-Farnell as well as Amazon and E-Bay. That way you will be able to change four items all at the same time, and, if your charger or other device requires earthing, it is far less likely for the earth connection to be compromised than with a travel adapter.
It's a ridiculous, offensive and criminal idea to try to impose political union at a supra-national level and render countries non-existant.What a good idea, to have a Europe-wide single market without barriers.