I was going to let this issue go, but after listening to the hon. Member for Edinburgh East I cannot help myself. The clause is a tax on expensive dwellings within a tax wrapper, so we can ask ourselves two questions: why are they expensive, and why have people gone to the trouble of wrapping them in these companies? The hon. Lady mentioned the cost of these dwellings and how people have benefited from them, and I remind the Committee that over the 13 years of new Labour the broad measure of the money supply tripled. M4 went from £700 billion in 1997 to £2.2 trillion  in 2010. The reason why house prices have shot away so substantially is because too much money was loaned into existence and into property. That happened in particular because flawed regulations, such as Basel, directed the money there. This is the problem: we have ended up bringing forward a measure to scoop off some of that gain from the rise in property prices. Those properties were expensive because so much money had been loaned.