I think it is within the knowledge of the House that whereas some years ago this was the most terrific, pressing problem, and our biggest problem, in many parts of the country and in some authorities it has now very largely been satisfied. [HON. MEMBERS: "Where?"] It is for that reason that authorities such as that of the hon. Member who put down the Question are now concentrating on what one might call not houses for general purposes but for slum clearance, the pulling down of old houses, the renovation of some of them and the building of houses for old people.