Found this in the IET mag. Quite a good website (if a little badly layed out) about those little plastic socket protectors.
Makes me pretty grumpy that something like this only has to pass safety testing as a toy. I think the BS 13A plug is by far the nicest and safest out there and probably the only plug in the world that will always sit ‘pins up’ in order to inflict maximum damage to your foot from those machined brass edges.
15A through one of those bent metal US plugs? I’m amazed they don’t have more issues. 115V might be safer but you get awfully used to toasters and kettles running at UK speeds. Making toast in the USA is a slow process.