Owain wrote:

Under the forthcoming 17th Edition IEE Regs such continental
perversities as sockets in bathrooms may be permitted.

But such sockets must be 3 m or more horizontally beyond the boundary of
zone 1 (i.e. at least 3m away from the edge of the bath and/or shower
tray. Many bathrooms simply will not be big enough to be allowed a 13 A
socket.

The relevant 17th edition regulation in the public draft is 701.512.3.

--
Andy