Yes potentially dangerous has always been stupid, 230 volts AC has always been potentially dangerous, but I would say, BS 7671:2008 is the edition I would use to work out what is potentially dangerous, as the use of RCD protection and the bonding requirement changed with that edition, in respect of the bathroom, I don't feel one can rely on a plumber to always replace the bonding, as often today not required, we have to consider what will happen if a length of copper pipe is replaced with plastic, so I want all items in the bathroom protected with the RCD, as one can't rely on items remaining bonded.
But this is a personal opinion, as long as the bonding in the bathroom is in place, then one can argue either way.
Escape routes are also a problem, an escape route should not contain anything which can burn, so a hallway which is carpeted is not an escape route. Again down to personal opinion, clearly escape routes in the past have been carpeted, but as far as I am concerned, I am not a safety officer or a firefighter, and so not qualified to designate any route as an escape route. Careful not to call them firemen, we have loads of them at work, but their job is to keep the fire going so they have a good head of steam.