We will have to come back to the question of how to get more evidence into the room, as it were, but I will try at least to answer some of the questions that have been raised today. I appreciate that I will not be able to answer every one—the hon. Gentleman is absolutely right about that—but I will try to cover as many as I can.
The averages that I am describing are average rates of return, which are calculated according to a whole range of things. Capital costs differ, because some people have bought bigger or more expensive boilers and because all sorts of other costs are involved, such as installation and fuel, but the target number is the average rate of return. As we have heard, the rates of return that are actually achieved will be distributed around that average; some people will do better, while some will do worse. That is why the buy-out scheme for those who will potentially lose out is so important. It is also worth while pointing out that the average rate of return is directly comparable across the rest of the UK. It will become 12% in Northern Ireland and it is 12% in Great Britain. As I understand it and for what it is worth—I appreciate this is of tangential relevance, but it is perhaps interesting information—the intended return of the Republic of Ireland scheme is 8%, not 12%.