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Housing and Regeneration Bill

I am most grateful to my right hon. Friend for giving way. I think that the whole House welcomes the proposals. On the subject of trying to build eco-towns and sustainable low-carbon footprint homes, and given the debate that is currently under way in the other place on climate change, as this Bill progresses will my right hon. Friend consider whether there should be a duty on the new agency to incorporate and have regard to sustainable development? In the past, we set up the regional development agencies without a specific duty, but it is not enough just to say that they ““may”” have regard to sustainable development. Will she consider them having to have regard to that?