I am considering converting a shed into a garden workspace, but among other things, I’d need power out there. We’re pretty handy and can do most of the things we’d need to do ourselves, just as damp proofing, insulation and so on. But the electrics definitely seem like a job for the professionals - particularly as I would have clients out there with me. I feel frying one would lead to poor reviews on Google 
So, engaging the hive mind - what would a ballpark figure be for running electrics to a shed and fitting, say, a double socket and a ceiling light? Perhaps also an outside light for the winter months?