I am sure that that would improve matters. The hon. Gentleman will appreciate that we have a different arrangement in Scotland, but I am aware of the issue involving double glazing. Double glazing is not the most efficient measure that may be taken, but clearly it is a relevant factor. There is not much point in putting in cavity wall insulation and loft insulation if all the heat goes out of the windows.

I want to move on to a subject that is topical, given the cold winter-cold weather payments. They are a very specific mechanism for dealing with fuel poverty. However, the mechanism for delivering cold weather payments means that millions of people lose out on them. It is estimated that 1.7 million people who would be entitled to the pension guarantee have not applied for it, and because they have not applied, they do not achieve the threshold-the "gate", as it were-and so they are not eligible for cold weather payments, which they would otherwise automatically accrue.

In my constituency, it is estimated that 1,600 pensioners would be eligible for cold weather payments, but they have not applied for them, and I am sure that other Members have similar figures for their own constituencies. I do not wish to labour the point, but it is simply a geographical fact that Scotland is colder than the average for the United Kingdom.