Utility / shower room possible?

The toilet is irrelevant, the only bits that matter are showers and baths. If an electrical point falls within what is called a 'zone' then it must be to an appropriate level of IP Rating, this would cover fused spurs, however Sockets however fall under a different regulation. Please see the following link which will show you where your zones are. http://electrical.theiet.org/wiring-matters/53/section-701/index.cfm But basically, beyond 0.6m from the edge of a bath or shower then you are outside any zones and technically you can put your spurs there... however common sense would suggest otherwise. I would certainly make sure any circuits are RCD protected, are out of arms reach from bath or shower. Regarding sockets under The 17th Edition regulation 701.512.3 (not sure of reg number under amendment 3) permits 230V socket outlets to be installed in a room containing a bath or shower, providing they are installed 3m horizontally from the boundary of zone 1. This would not be possible given the dimensions of your room.