The vast majority of the UK’s air quality problem is the unregulated pollutants from road traffic. Predominantly as a result of particulate matter from the combustion of diesel and petrol. The fact that DEFRA retain responsibility for air quality and has no real influence over anyone, let alone DfT, is at the heart of this issue. Don’t get me wrong, DEFRA do a good job in developing and implementing policies which regulate other industries but without regulation and new policies air quality is not going to improve soon. I am very disappointed in the draft plan published today. There is nothing bold, imaginative or impressive about this wishy washy report.