[jve]

And 7kW-10kW water heater right INSIDE of your shower, right?

I was amazed that a socket couldn't be installed for the purpose of LED mirror that is a meter away from shower, but they seem to be fine at running water heater inside shower in UK.

[hdgvhicv]

My shower is on the hot water system, not electric.

But for fixed stuff like the light, yes, it meets IP standards. If you meet the right standards you can of course have electrics in splash domes. A standard socket is not going to meet those ingress protection ratings.

A socket 1m away from a shower is likely to have wet hands plugging things in.