Mark Broomfield has a PhD in atmospheric chemistry, and has specialised in air quality, odour and health issues since 1992, both within the consultancy sector and as an industry specialist at ICI. He has completed research for DEFRA and Scottish Environment Protection Agency into the control of dioxins and furans, and carried out influential evaluations of the Government's Expert Panel on Air Quality Standards and Air Quality Expert Group. He lives in Shrewsbury.