Question to the Department for Transport:

To ask the Secretary of State for Transport, what assessment his Department has made of the effectiveness of the expanded Ultra Low Emission Zone in London.

Transport in London is devolved and is the responsibility of the Mayor of London and Transport for London (TfL). While the Department for Transport works closely with TfL on a range of issues, the operation and monitoring of the Ultra Low Emission Zone (ULEZ) is entirely a matter for them.