I had considered this idea too. Unfortunately it is very risky and IMHO will not work. Many analysts are predicting that the Bank of England (now it's under governmental control) is getting it's sums right to stem the housing market inflation and that house prices will slow down and stop, though will not crash as in previous cases. Indeed the Independent reported today that house prices have stabilised in the south to the point of 0% inflation of prices, over the last 2 months, and that it is very unlikely the BofE will need to increase the base rate any further (remember it has been in past cases, the sharp increase in the base rate which has triggered house market crashes as people can no longer afford their mortgage and enter a selling frenzy/get repossessed)