Six English Towns

England has more unspoilt towns than any country in the world. In this series, the architectural historian ALEC CLIFTON-TAYLOR has made a personal choice of six, based not so much on the historical appeal of a fine cathedral, a castle or a church but the range and quality of the ordinary domestic houses and the use made of the traditional building materials of England - stone, brick, wood and plaster. ' I'd like every programme to be an exercise in looking.'