Newly-elected London Mayor Sadiq Khan is proposing to extend the Ultra-Low Emission Zone (ULEZ) to the North and South Circular roads, beyond its previously proposed reach within the Congestion Charging zone, as well as bringing forward its roll-out to before 2020.
More information is available from various sources, including http://www.commercialmotor.com/news/mayor-hits-hauliers-air-pollution-challenges (opens in new window).