I have a shaver socket in my bathroom and I've just fitted a next to it
which I now need to get power to for the lights that are built in.

In my last house I had cavity walls so it was easy to drop new wires down
from the loft into the space behind the mirror, and then wire the mirror
into the lighting circuit.

My new place doesn't have cavity walls, so I was wandering if I can power
the mirror from the back of the shaver socket. It doesn't seem too
unreasonable as the mirror lights are 100w, but powering a shaver socket
and mirror lights from one spur seems like it might be bad form.

Cheers

Chris