Marco, thanks for the link to the page about non-compliant adapters. I'm beginning to think that there might not be such a thing as a compliant adapter. Do the adapters sold in the UK have shuttered sockets for the power prongs? I don't think that any adapter you'll find on Amazon has shuttered openings. I can see why with the blade slots on the US end having parts inside at 230-240V, shutters should be mandatory for all sockets, even those that mate with non-UK plugs.