Clean Air Zones and ULEZ: What Professional Drivers Need to Know
Clean Air Zones are now active in several UK cities, and more are planned. For professional drivers, understanding which zones apply to your vehicle, what charges exist, and how to stay compliant is essential.
What Are Clean Air Zones?
Clean Air Zones (CAZs) are areas where vehicles that do not meet minimum emission standards are charged a daily fee to enter. The aim is to reduce nitrogen dioxide pollution in city centres. London operates the separate Ultra Low Emission Zone (ULEZ), which covers the entire Greater London area.
Current UK Clean Air Zones
As of early 2026, the following cities operate Clean Air Zones affecting commercial vehicles:
- London ULEZ — covers all of Greater London. Non-compliant HGVs pay £100/day, vans pay £12.50/day
- Birmingham — Class D zone. HGVs that do not meet Euro VI pay £50/day
- Bath — Class C zone. Commercial vehicles only. Non-compliant HGVs charged £100/day
- Bristol — Class D zone covering the city centre. HGVs pay £100/day if below Euro VI
- Bradford — Class C zone for commercial vehicles
- Portsmouth — Class B zone affecting buses, coaches, taxis, and HGVs
- Sheffield — Class C zone for larger commercial vehicles
Which Vehicles Are Affected?
The emission standards that determine whether your vehicle is compliant are:
- Diesel vehicles — must meet Euro 6 (registered from September 2015 onwards)
- Petrol vehicles — must meet Euro 4 (registered from January 2006 onwards)
- Electric and hydrogen vehicles — always exempt
Most modern fleet vehicles are compliant. However, if you drive an older vehicle, you should check before entering any zone.
How to Check Compliance
Each zone has an online checker where you enter your registration number. The government also operates a national vehicle checker at gov.uk/check-clean-air-zone-charge. As a driver, your employer or agency should ensure the vehicle meets requirements, but it pays to verify yourself.
Practical Tips for Drivers
- Know which zones are on your regular routes — plan ahead
- Check that your vehicle registration is correct in the system (errors happen)
- If driving your own van for agency work, check compliance before accepting jobs in zone areas
- Keep records of zone charges if you need to claim reimbursement from your employer
- Remember that charges reset at midnight — two calendar days means two charges
What This Means for South West Drivers
Bristol and Bath both have active Clean Air Zones, making this directly relevant for TRS Recruit drivers. If you are assigned to routes passing through these areas, your agency vehicle will be compliant. If using your own vehicle, speak to us first and we can advise on your options.