My Lords, I remind the Committee that we have been through, and probably are still in, the most incredibly severe recession. It is an appalling recession and many building companies have gone broke. They have gone into liquidation. Unfortunately they and other companies have signed up to planning agreements which, because such almost impossible burdens are attached to them, sterilise the sites, development, and the ability to build on them. This clause, the thrust of which I very much support, recognises that fact, and some local authorities, to their credit, recognise it because they are already renegotiating these planning burdens. Local authorities recognise that they want some affordable housing rather than none. The quid pro quo argument made by the noble Lord, Lord Best, is well worthy of consideration as long as there are reasonable time limits.
Another thing that has not been mentioned sufficiently is that, even if you renegotiate a planning permission, that takes a great deal of money, time and effort. Let us get some planning done and let us get some houses built. We are building only about 100,000 homes a year. We need at least 200,000 a year. The noble Lord, Lord Deben, is absolutely right. Let us try to remove some of these burdens and get builders building again. There has been a fundamental change of economic circumstances. That is what the clause is trying to deal with and that is why I support it.