BBC

You have to cross the water to the Isle of Bute to find some of the most futuristic "social housing" in Scotland. There I discovered David Reynolds and his two-year-old son Kieran building a jigsaw in a pool of sunlight. In 25 years' time Kieran will have moved onto bigger things - like his own home. He is the future and - in many ways - so is the family's new flat in Rothesay. They have big, south-facing windows, massive insulation in the walls and triple glazing. David say it's much better than their old tenement flat, which was cold and damp.