NineDRAGONS thanks, I wanted to point that out to Scaryteacher.
"Why should the state have to pay for someone because although they have a gigantic asset, it's the family home?
Anyway, it's all irrelevant - politically any such scheme would be like radioactive waste."
This is the elephant in the room "baby boomers all now retiring are a large demograph with a 75% voting turn out. No political party will risk losing the grey vote. So : winter fuel , bus passes, prescriptons are pretty protected.
I do not think anything can be prohibited (BTL) but removal of profits (eg increase capital gains on second/third etc homes up to 40% plus-as it used to be) would deter it. Maybe higher rates of stamp duty if not primary residence.
Xenia with her "There is more poverty in the old than the young , actually despite what newspaper articles says. Many of the elderly are lonely. Plenty live on a state pension. Many saved all their lives and have capital but not much and are trying to live on their building society interest rates which are very low.." is wrong as the percentage of elderly living in poverty is lower than the percentage of young working families (In a guardian article).