Current research activities include reactive air pollution in the atmosphere and its contribution to urban and global air pollution, indoor air quality, inter-annual observations in the background atmosphere, composition and evolution of organic aerosols, theoretical and experimental approaches to high complexity mixtures, multidimensional and multiphase chromatography, microfluidics and miniaturised sensors, petrochemical composition and natural products analysis. Alastair works extensively with government on air pollution policy, and is a member of the Defra Air Quality Expert Group, and has provided evidence to House of Commons select committees on this subject. He also works with industry translating atmospheric chemical technologies into other fields. Recent collaborations include joint research projects with Markes International, the National Physical Laboratory, DSTL, Givaudan UK, Anatune Ltd and AWE plc.