Ben is the Director of Air Quality Modelling & Assessment with AQC and has more than 20 years’ experience in the field of air quality. He has been responsible for a large number of air quality and greenhouse gas assessments in the UK and abroad. He has specific experience in the application of detailed dispersion models and has contributed to the development of modelling best practices. He has provided public inquiry expert witness services, as well as support and advice to Defra, the Highways Agency, the Environment Agency, Transport Scotland, Transport for London, and numerous local authorities. Ben is a member of Defra’s Network of Evidence Experts and of its Air Quality Expert Group.