Our house received a posted leaflet from Ceredigion County Council this week about the highways in Winter and in particular the precautionary salting routes. Actually we received 3 copies, one for each individual on the Electoral Register. Its not uncommon for husband and wife to share a copy and my eldest son is away in University and not currently at home - we are not an unusual family, all residents do not require an individual copy. I know of one house which has received 4 copies.
If the Electoral Register is to be used then it is not beyond the wit of information technology to send one copy per household. One is more than enough, the rest lie unopened.