My theory is that our slightly obscure desire to live in houses rather than flats in UK, which in turn requires more land, as there is less land readily available its demand is relatively higher, and hense the price of buying it is greater...This is one influence on house pricing.
Also if many people want to own homes, rather than rent them... more flats would be built, which is generally more economical that a country crammed to the brim with 3-4 bedroom housing, so the economy would strengthen and the housing would become cheaper here.
I also think that because our our banks allowed so much borrowing the housing industry had been enjoying large chunks of it. ever since labour took power, my old man, a property developer, has been making more money each year. Luckily for him he invested into rentals so he's avoiding this recent flop now and retiring.
Because of the fall in house prices we can pick up around a 15% return from letting refurbed houses out.