I thank my hon. Friend for his support. As he knows, I visited Milton Keynes quite recently. It had become a dormitory town for the London area because we had been taking people out of the slums and into greenfield areas, which was right at the time. There were about 12 houses per hectare. If we want to develop we will have to change the density levels, which will pose a challenge. As my hon. Friend knows from our dinner with local authority and regional development agency representatives, that involves two or three regional bodies. The same applies to the Thames gateway, which also covers two or three regions. We need all the co-operation of those bodies, so that they can help in the making of strategic decisions that affect them in the development of new growth areas and sustainable communities.