I am very happy to assure my hon. Friend once again that the protection of the green belt remains a priority, as does developing brownfield land in all parts of the country, including Hertfordshire. We do need to build more homes, including in places where homes are most expensive. It is, and will continue to be, however, for local councils to decide which sites are available, and which sites are viable and suitable for new homes. That will involve reimagining high streets and it will involve promoting gentle density, but we will do everything we can to protect both the green belt and our beautiful countryside.