Yes.
Kitchens (and bathrooms, areas outside of the equipotential zone) are only "special" with regard to exempted works. eg: you may add a spur to an existing ring main without telling anyone, but not in a kitchen or bathroom or (presumably) your detached shed (I am unclear on the last point).
You may, however, with the appropriate planning permission and building control, knock down your house, and build a completely new one, make the foundations (with cellar), fit the electrics, gas, structural members, roof etc all by your own fair hand. Many people do varying degrees of this all the time.
Theoretically, I suppose you could build a skyscraper as a DIY job, but the PP would be tricky (Norman Foster has enough trouble) and the building control people probably want to see calculations slightly more sophisticated than the printout of a "Superbeam" screenshot ;->
Tim