Of the 64 local authorities initially directed to take action to tackle poor air quality, 16 were found to be already compliant following local modelling, and three exited the programme for other reasons.6 The Department for Transport told us that it expects the upcoming assessment of data for 2021, to be published in September, to show that 16 of the remaining 45 were in compliance in 2021, and that a further 16 will be compliant over the subsequent four years. The remaining 13, for which expected compliance dates are unknown, are the 10 local authorities working together in Greater Manchester, along with Liverpool, Coventry and Nottingham.7