The prime minister must stand up for ordinary car drivers and stand up to the car industry by committing to a programme of mandatory vehicle recall and compensation for drivers. The government got us into this toxic mess by promoting and incentivising diesel, and high time that ministers took responsibility and started cleaning up. Urgently.
Walking in the mountains of Snowdonia, the problems of the city can feel a long way away. The negative impact of poor air quality on human health is, thankfully, increasingly well-documented. Not only does air pollution contribute to thousands of early deaths, it also compromises the health of people suffering from ailments like asthma.