As the economy is picking up, it is clear that more housing will be needed and will be built on land throughout Britain. Does my hon. Friend agree that as there are still 88,000 acres of vacant, derelict, dormant and underused land on the Land Registry, the Government should introduce some private sector involvement to get rid of that land? They should direct developers to develop on that derelict and vacant land before building on green-field sites, particularly in the south and south-east where there is great pressure to destroy more and more of our green and pleasant countryside.