From what I've read in the past if we had a referendum on the death penalty it would be brought back – but that's a bad side of democracy so we don't do that right? Anyway, all we have as a severe punishment is the ability to lock up people up for a period of time to keep them away from the rest of society – hopefully get reformed in the process though.
Anyway, is there any scope to make better use of their time separated from society? Reformation must be a serious part of that but anyway to help them contribute something back to society and maybe offset he cost to a degree? Tread mills to generate power? Filling pot holes?
Or how about helping poorer countries by paying them to imprison people for us? They take them for a few years in return to cash they can use to help their society? Would save us a few quid and help poorer nations.
Just some thoughts….