Showers - cabling in stud partition

[Stebaneath]

I want to run a cable to a light switch in a stud partition. There's a shower on the other side of the partition. Is there a risk bearing in mind the proximity of the shower?

 

[ban-all-sheds]

http://www.niceic.org.uk/downloads/C5-43.pdf

http://www.niceic.org.uk/downloads/concealedcables.pdf

http://www.iee.org/Publish/WireRegs...les_concealed_in_thin_walls_or_partitions.pdf

BTW - has Wales seceded from the Union then?