They are not intended for installation in a bathroom or a washroom. They're typically installed in places like perhaps over a mirror in a dressing area or near a dressing table in a bedroom and could be used for charging electric toothbrushes / shavers. There is an increasing demand for this type of socket in places other than a bathroom as most modern shavers are not plugged in during use.
These sockets could be added to a lighting circuit feeding an over-mirror light for example. (although that would be unacceptable under Irish regs as they would need RCD protection as single phase sockets up to 32Amps!)
BS1363 sockets would be unsuitable as they're designed for up to a 13Amp load and require grounding etc.
these sockets only fit shaver plugs and are fused at 1Amp.
Only the isolation transformer types are suitable for use in bathrooms/washrooms (i.e. over sinks).
They are commonly built into a mirror lamp.
