Book excerpt: This is a thoroughly revised and updated edition of KEITH SPENCE's essential guide to two of the most beautiful - and often still unspoiled - counties in England, which on its first publication quickly established itself as the best available guide to the area. Mr Spence shows how much as yet survives and how rich, varied and fascinating this part of England still is. He writes sensitively and knowledgeably about buildings and architecture, and has a keen sense of the detail that gives identity to a place. There is much to be learned from this book, which maintains the high standard of the Companion Guide series. OBSERVER