Part of the story is the attack on manufacturing industry and the move to a service sector during those years, which had an effect on emissions. We should discuss that with care on another occasion.

We support new clause 20, which will create a new power to make building regulations requiring the incorporation of microgeneration technologies in new build. I was asked about buildings other than housing, and I am advised that a code for homes is a first step and that the Office of the Deputy Prime Minister will develop a code for buildings at a later stage. The question is important, as is the answer.