The manufacture of building materials is a very important industry in my constituency, which is part of a mineral-rich county. Relatively recently, I talked to a manufacturer of chimney linings who suggested that over-zealous implementation of the revised building regulations was leading to the slow death of the British chimney because of its thermal inefficiency. Does the Minister agree that the chimney is important, aesthetically, structurally and in health terms, that we need ventilation, and that we do not want to live in hermetically sealed tombs? Will he agree to discuss the topic with me?