Beth is a recognised national and international air quality expert. For over two decades, Beth has delivered air quality management solutions at local, national and international scales, specialising in city/local-scale air quality assessments. Beth has extensive experience of the design, appraisal and implementation of low emission strategies and low emission zones including their economic appraisal through cost benefit analysis and cost efficiency analysis. Beth’s knowledge is underpinned by in-depth understanding of dispersion modelling, emission inventory development and air pollution measurements. Beth has worked on well over 200 air quality assessments, many of which have been promoted as examples of best practice. Beth’s expertise has been called upon by national governments for the development of air quality management technical guidance and associated helpdesks. Beth advises the European Commission on the implementation of air quality management including providing support on the ongoing review of the Air Quality Directive. Beth’s depth of knowledge and experience is reflected in the advisory positions that she holds including membership of the UK’s Investigation of Air Pollution Standing Conference steering committee and Environmental Protection UK’s (EPUK) air quality management committee.