Because we will have under-floor heating in a solid slab we do not intend running cables in the ground floor but to supply the downstairs rooms from the ceiling above. Conventionally one has downstairs circuits and upstairs circuits but it would suit our build to have a vertical split of circuits rather than a horizontal split. So for example the bedroom above the lounge could be on one circuit another bedroom over the utility on another etc. Whilst it makes utmost common sense from a cable utilisation by minimising runs and practicality of the installation convenience I can find nothing written about the pros and cons of doing the rings this way. Anyone have a view?