>>The UK doesn’t allow any receptacle circuits in a bathroom? Not even if they’re protected with an RCD? That’s a GFCI for Americans.
So to be fair - until last year(or 2023?) you couldn't have them at all, then they changed the rules to say you can, but they have to be at least 3 metres away from the nearest bath or shower. For reference, my entire bathroom is 2.5m by 2m - and I suspect 99% of British bathrooms aren't much bigger than this. So in theory - you can. In practice....not so much.
So to be fair - until last year(or 2023?) you couldn't have them at all, then they changed the rules to say you can, but they have to be at least 3 metres away from the nearest bath or shower. For reference, my entire bathroom is 2.5m by 2m - and I suspect 99% of British bathrooms aren't much bigger than this. So in theory - you can. In practice....not so much.