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Climate Change Bill [Lords]

I think I would be very unwise to answer that question directly. I am sure I could find some projections, but the amounts involved are a long way ahead and will depend on global agreements, if we get them, and on emissions trading. We cannot honestly predict the extent to which aviation might or might not grow, as that will depend on the decisions that will be taken—here, in the whole of Europe and, I hope, globally. I might be able to produce a figure for the hon. Gentleman, but I am not sure that it would advance any of the arguments that are being made.