I think they just churn these things out with little / no regard for local regulations.
It's extremely annoying that most of these devices are also designed so that the cable exits through the top when connected to a BS1363 outlet. i.e. they're designed with the earth (ground) pin at the bottom (US style) rather than at the top (BS style)
It's minor, but it's annoying!
Many cheap adaptors sold outside the UK and Ireland for use in the UK/Ireland also come without fuses. It's potentially very dangerous considering that you could be plugging your laptop into a 32A ring (bus) circuit without down-fusing.
