I'd add that demand is caused by loads, rather than circuits.  Circuits are typically designed to meet a large number of requirements, load only being one of them. Unless you're in a fully populated medium sized mansion you probably don't need  4x32A rings plus a 20A radial as far as load is concerned (traditionally that lot would serve around 450m² of floor space - i.e. between 4 and 5 times a typical 3-bed semi, so including 4 or 5 kitchens). It would be equally valid to come up with a theoretical design with the minimum size/number of circuits that could supply the actual loads, and base you MD on that.

   - Andy.

I'd add that demand is caused by loads, rather than circuits.  Circuits are typically designed to meet a large number of requirements, load only being one of them. Unless you're in a fully populated medium sized mansion you probably don't need  4x32A rings plus a 20A radial as far as load is concerned (traditionally that lot would serve around 450m² of floor space - i.e. between 4 and 5 times a typical 3-bed semi, so including 4 or 5 kitchens). It would be equally valid to come up with a theoretical design with the minimum size/number of circuits that could supply the actual loads, and base you MD on that.

   - Andy.