Brian is a nationally respected expert who has over two decades of experience in the design, validation and interpretation of ambient pollution and emission measurement programmes and surveys. Brian has deep insight into a wide range of techniques and approaches for the measurement of environmental pollutants and air toxics including high and medium volume samplers, deposition gauges, diffusion tubes, and pumped and denuder tubes. Brian and his team specialise in the measurement of a wide variety of pollutants, beyond the standard suite, including volatile organic compounds; parameters of acid rain; particulates covering a wide range of size fractions and metrics such as mass and number; metals; radionuclides; odours; bio-aerosols; dioxins; polychlorinated biphenyls (PCBs); and polycyclic aromatic hydrocarbons (PAHs). Brian leads Ricardo Energy & Environment’s specialist measurement network contracts that include the high-profile UK Eutrophying and Acidifying Pollutants (UKEAP) network, various hydrocarbons measurement networks and emergency response air pollution quality measurement facilities. He also oversees the Ricardo Energy & Environment Aerosol Science Centre and CEMS and Performance Testing Consultancy.