Graham. wrote:

What happens if you drop the shaver in the bath while the toothbrush
is in your mouth and you are holding the tap?
Probably nothing, I know but safety is about unlikely sets of
occurrences.

Well I would need to fit another shaver socket or move the existing
one... however point taken. But both my shaver and toothbrush are
cordless. But is your scenario any different from using the shavers
single output and droping the charger into a sink full of water while
holding the tap?

Given the above scenario above I do wonder if my houses built in current
leakage protection is better than the decades old isolation transformer
technology that is built into shaver sockets.