Katja Hall: The Green investment bank is very welcome and it has a role to play. I would not have thought that would preclude the Government from also being smarter in their use of procurement. We feel that procurement should be about promoting growth, and we should realise the power that Government have in their role as a buyer of goods and services from the private sector. The Government might have a role in procurement as well, but there is still a need for the Green investment bank. There is also a wider need to look at how we can get investment into infrastructure more generally, and we have been doing quite a lot of work on that.