How does the council know I have used my vehicle in a Clean Air Zone?

Automatic Number Plate Recognition (ANPR) cameras detect vehicles that are used in a Clean Air Zone.

A Penalty Charge Notice (PCN) will be issued to the Registered Keeper of a non-compliant vehicle used in the zone if the charge is not paid on time – either up to 6 days in advance of, or by 11.59pm on the 6th day after, the vehicle was used in the zone.

Payment should be made at the GOV.UK Drive in a Clean Air Zone service, not to the local authority directly, though a number of Clean Air Zone exemptions and discounts apply, which may require a different method of payment.