The noble Baroness is quite right: it is one of the biggest public health problems that we face. It is associated with around 30,000 deaths a year, and that gives us a sense of the scale of the problem. I mentioned the clean air strategy but two specific important pieces of research are also taking place. One is called the Exploration of Health and Lungs in the Environment, which is a London-based study looking at the links between pollution and children’s lung health. The Department of Health and Social Care has also commissioned a review of adverse birth outcomes and early-life effects associated with exposure to air pollution. Therefore, we take this problem seriously and are commissioning research to know not only the consequences but what to do about it.