Thank you.
On corporate income tax, I might point out to Mr. Conway that we advocated lower corporate tax before the government did it, so that's one of the areas in which we do agree. But I might also point out to Professor Brooks that we've also committed to a very aggressive so-called 30-50 plan that will reduce poverty by 30% over five years and child poverty by 50% over five years.
I'll start with Mr. Heady. I've never been a supply sider or a Laffer curve type who thinks tax cuts pay for themselves, but on the corporate tax side, they might to some extent when you take account of location, not only of activity but of reported income. So my question to you is this: does the OECD have an answer on the question as to what extent corporate tax cuts will generate additional revenue so as to be partially self-financing?