Exactly Talkinpeace 2. Houseprices were allowed to run away in this country, as in many, because of credit (mortgages) easily obtained. The more credit that could be got, the more prices rose. It's very sad that the UK, with its history of solid banking, did not stand firm against this but rather embraced the loose lending more than most.
Other countries have experienced crashes now but it has caused misery so its not something to be desired either. There's lots of things stopping the crash in the UK, among them the loosening of repossession due to arrears criteria, lowest interest rates ever, benefit support for mortgage interest, housing benefit/local housing allowance paying over market prices so those who have BTLs can keep them when they should not really be viable (and low tax conditions too on BTL profit) - the list goes on.
The vast majority suffer with these high rental and high mortgages. Everytime I see a thread on here from someone struggling with money, it always seems to be the mortgage/rent that eats up far more than the 1/3 income that was once expected.
House prices could drop if there was "jingle mail" like some parts of the States where, if you walk away, you do not have to own the debt for ever. However, then UK banks would go under because their mortgages are assets on their balance sheets and reselling abandoned places at what people could actually afford would mean that the banks would have to massively mark down their assets.
I have no idea what will happen but think the current situation will create every growing resentment and social unrest between those who own and those who are stuck in insecure AST rental contracts. If the banks are to be saved by not having to mark down their assets, then at least people should be able to rent with proper secure contracts so someone settled in area, with children especially, should not be at risk of having to move at 2 months notice.