The Low Emission Zone (LEZ) operates to encourage the most polluting heavy diesel vehicles driving in London to become cleaner. The LEZ covers most of Greater London and is in operation 24 hours a day, every day of the year.
The LEZ is separate from the Ultra Low Emission Zone (ULEZ) which is in place in central London and operates 24 hours a day, every day of the year except Christmas Day.
Tougher LEZ emissions standards for heavier vehicles are coming on 26 October 2020, but no new charges will be introduced until the end of February 2021.
This is to give the freight industry more time to meet the new standards as it faces intense demands from the coronavirus pandemic.