Electric shavers (and toothbrushes) tend to keep the mains wiring close together so if it were dropped in the bath the current would not loop far out into the water, but other items not specifically intended to be used in bathrooms are wired any old way.
As a more general point on this topic, we seem to have very strict rules for swimming pools, yet similar enviromental conditions occur in bathrooms while the rules there aren't so strict? We could also add kitchens to the list, as people are being electrocuted in them too, and virtually no restrictions there at all.
I feel the strategy to try limit the opportunities people have to electrocute themselves is good, and providing ready sockets in bathrooms is a step backwards. Better to disswade them from using hairdryers/mains radios in bathrooms. The presence of water does greatly increase the chances and effects of an accident. Reliance on technology to protect you can backfire, e.g. we know that MCBs occasionally do not trip when they should.
Last friday my dads workshop burnt down. Forty year collection of tools, materials etc incinerated, never mind all the personal items. He virtually lived in it, only coming into the house for meals, tv, and sleep. We don't think the electrics started it, but something wasn't right. Luckily no-one was hurt, but it does give you more respect for safety practices.
