For the last time, Zac Goldsmith is cutting my time short. He demonstrates well why he should remain in this House.

I want to emphasise solutions. It is important to recognise that there has been a collapse in London for those who require social homes. If the average income is £32,000 in London, many Londoners will never be able to own a home of their own. If the Government continue to extend right to buy to housing associations, more social homes will come off the market. If they do nothing about those who exercise the right to buy, which for many is effectively a discount of hundreds of thousands of pounds from the taxpayer on social homes, there will continue to be a collapse in social homes. It is of concern to me that despite quite a lot of cross-party consensus, little is said by the current Government on social homes and where we will see them.

We need new solutions. What we heard from my hon. Friend Siobhain McDonagh was absolutely right—prefab, discount homes for young people at prices that they can afford. That is why, in my bid to be London Mayor, I have suggested that we issue bonds and enable people to build at a discount on public land. We cannot build in such a way on public land if we continue to sell it at best value to the highest bidder. TFL land and Scotland Yard have been sold off to the highest bidder. Local authorities are selling off land to the highest bidder. That is public money and public land, so it should absolutely be used to build discount homes that people can properly afford. We need a bond issue. Finally, we need to revisit green-belt designation.