Kevin McCloud presents the first of four special programmesinspired by 15 years of Grand Designs. He begins with a look atthe challenges of self-building in the city, where space is ata premium and architects have to be at their most ingenious.Kevin uses footage from the best urban builds from the showover the years, meets pioneers at the forefront of the latestarchitectural thinking and looks at clever innovations thatcontinue to transform people's lives to reveal which designswork best and why.
