London
Pay-to-enter model: a daily charge lets a non-compliant vehicle in.
London ULEZ
All London boroughs, inside the M25
England: Clean Air Zones
Same pay-to-enter model as ULEZ. GOV.UK runs one shared checker for all seven.
Birmingham CAZ (Class D)
Inside the A4540 Middleway ring road
Bristol CAZ (Class D)
Central Bristol
Bath CAZ (Class C)
Central Bath
Bradford CAZ (Class C)
City centre and Aire Valley corridor
Portsmouth CAZ (Class B)
South of the M275
Sheffield CAZ (Class C)
Within the A61 and part of Sheffield Parkway
Tyneside CAZ (Class C)
Newcastle & Gateshead city centres, plus the Tyne, Swing, High Level & Redheugh bridges
Scotland: Low Emission Zones
Genuinely different system: there's no way to pay to enter. A non-compliant vehicle gets a penalty charge notice instead.
Glasgow LEZ
City centre, enforced since June 2023
Edinburgh LEZ
City centre, enforced since June 2024
Dundee LEZ
City centre, enforced since May 2024
Aberdeen LEZ
City centre, enforced since June 2024
England vs Scotland: two genuinely different systems
It's easy to assume every UK "clean air" scheme works the same way ULEZ does, pay a daily charge, drive in regardless. That's true for London and the seven English Clean Air Zones. It is not true in Scotland at all. Glasgow, Edinburgh, Dundee, and Aberdeen simply don't offer a payment option: drive a non-compliant vehicle into one of these zones and the only outcome is a penalty charge notice, with fines that escalate sharply on repeat offences within a 90-day window. If you're planning a trip into any of these four cities, checking compliance beforehand isn't optional in the way it is with ULEZ, where a missed check just costs you a charge you'd have paid anyway.
The compliance standard itself is consistent everywhere: Euro 4 for petrol, Euro 6 for diesel, and motorcycles exempt across the board. If your car meets that standard, none of this applies to you regardless of which zone you're driving into.
Frequently asked questions
Which UK Clean Air Zones actually charge private cars?
Only Birmingham and Bristol charge private cars, since both are Class D zones. Bath, Bradford, Portsmouth, Sheffield, and Tyneside (Newcastle and Gateshead) exempt private cars entirely and only charge taxis, vans, buses, coaches, and HGVs.
What's the difference between England's Clean Air Zones and Scotland's Low Emission Zones?
England's Clean Air Zones and London's ULEZ let you pay a daily charge to enter with a non-compliant vehicle. Scotland's Low Emission Zones don't offer this option at all: driving a non-compliant vehicle into a Scottish LEZ results directly in a penalty charge notice, with no way to pay your way in.
What emissions standard do I need to avoid charges?
Across every UK Clean Air Zone, ULEZ, and Low Emission Zone, the standard is consistent: petrol vehicles need to meet Euro 4, and diesel vehicles need to meet Euro 6. Motorcycles are exempt everywhere.