Exposure to air pollution from ambient environments is a major public health concern, particularly in urban areas with high traffic volumes and limited green space. This paper develops a preliminary large-scale simulation of commuters’ exposure to air pollution across England using network routing, granular air pollution estimates and census-based origin-destination commuting data. The study estimates commuting time commitments and route-based pollution exposure for populations across local authorities and regions, then links these outputs with demographic, socio-economic and contextual variables to examine spatial inequalities and spatial justice. The results provide a neighbourhood-level basis for comparing commuting-related pollution exposure and suggest that exposure patterns do not fully align with expectations from existing literature. The resulting data product can support more equitable urban and transport policy-making.