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My partner from the same part of the world as yours also doesn’t understand why you can’t have a socket in a bathroom so had one fitted anyway.
I pointed out the reasons why which fell on deaf ears even when I showed here the twisted cable on her hairdryer that had perished and split insulation exposing the inner cables!?..
(I cut the cable and told her to order a new hairdryer)
New bathroom we moved the socket in the hallway to just outside the bathroom door as electrician would not sign off one in the bathroom.
You can have a shaver socket in a bathroom.
https://www.screwfix.com/p/mk-logic-plus-2-gang-dual-voltage-shaver-socket-115-230v-white/55378?kpid=55378&cmmmc=Google--Datafeed-_-Electrical%20and%20Lighting?kpid=KINASEKPID&cmmmc=Google--TOKEN1-_-TOKEN2&ds_rl=1249401&gclid=Cj0KCQjw2qKmBhCfARIsAFy8buItBZiO7zvbc7M6rzLAAtoDTzP6bn7em5Y2sXd4zXuQZBkF6qNX_MYaAj4YEALw_wcB&gclsrc=aw.ds