What's the best way of routing this new cable?

[AlphaRomeo85]

Hi
I want to put a external commando socket on an out side wall. Conveniently my consumer unit is located just at the other side of said wall.
Please take a look at this picture of my downstairs toilet room, link here of it doesn't work for any reason

What's would be considered the best route?

My first thought would be to feed it down behind the plasterboard and fish it out into the boxed off area that I assume is covering the waste water pipes, run it round the corner and out of the wall somewhere between the toilet and the corner.

There's nothing wrong with that is there?

Thanks for any advice


you can copy and paste pics onto your post, or use "more options" "upload a file"

 

[sparkwright]

Can't you just drill through the back of the consumer unit?

 

[AlphaRomeo85]

Sorry, should have explained better.

The window wall is where I need to be. The consumer unit wall is shared with my next door neighbour