Climate Change Bill [HL]

We would lose a lot of credibility. My noble friend will be very isolated outside the House if he said that we should have no target and no figure. We have the scientific evidence for at least 60 per cent, although the evidence is seven years old and science has moved on since then. We have a procedure for changing the figure; that is, through the Climate Change Committee and the relevant legislative framework in the Bill. We would lose an awful lot if we took it out of the Bill, and we would send the wrong signals to other countries. It would be completely misunderstood if we did that and it would undermine the efforts being made in Bali as we speak. We want our targets to carry weight internationally. Obviously, we are likely to get that by using the best and most up-to-date science and the best cost-benefit analysis, so that we do not misunderstand the economics. There is widespread agreement across society that the changes are necessary and desirable. If the committee comes back with 80 per cent, we have to explain that the consequence is not just changing a figure from 60 to 80—if that is the figure that it chooses. The economic and other consequences have to be sold to the wider society. There is no question that there would be substantial changes.