It is particularly appropriate that at the end of a long day's Debate on Scottish matters we should come to discuss this important question of Scottish housing. With regard to Edinburgh, there was a survey carried out in the early part of this year in which it was indicated that 20,000 houses were needed to combat overcrowding and subletting. It was further estimated that another 30,000 houses might be required to replace sub-standard accommodation. That would make a total of 50,000.