Clean Air Zones and emission requirements for goods vehicles

Clean Air Zones (CAZs) charge the most polluting vehicles a daily fee to enter designated urban areas. If your goods vehicles do not meet the minimum emission standard, you face daily charges of £50 to £100 per HGV per zone. For operators running older diesel vehicles through multiple zones, the costs add up quickly.

Understanding which zones affect your routes, what emission standards your fleet meets, and what your options are helps you make informed decisions about fleet upgrades, route planning, or absorbing charges.

How Clean Air Zones work

Local authorities in England operate CAZs under a national framework with four classes (A to D). Classes B, C, and D all include HGVs. The minimum emission standard to avoid charges is Euro 6/VI for diesel and Euro 4 for petrol. Zero-emission vehicles are exempt from all CAZ charges.

Each zone operates independently. A vehicle entering multiple CAZs on the same day pays the charge in each zone separately. Charges apply per day, midnight to midnight, and must be paid by midnight on the sixth day after travel.

Clean Air Zones (CAZ) Framework and Classification

Framework for Clean Air Zones in England under the Environment Act 2021, including zone classes A-D, current UK zones, and minimum emission standards required.

Clean Air Zones (CAZs) are areas where local authorities charge the most polluting vehicles to drive, aiming to reduce harmful nitrogen dioxide (NO2) levels. The UK Government's Clean Air Zone Framework sets out four classes (A to D) based on which vehicle types are charged. Each local authority sets its own charging levels within the framework.

Vehicles must meet minimum Euro emission standards to drive in a CAZ without charge: Euro 6/VI for diesel and Euro 4 for petrol. Zero-emission vehicles are exempt from all CAZ charges.

Class A: Taxis and private hire vehicles only
Class B: Taxis, private hire vehicles, buses, coaches, and HGVs
Class C: Taxis, private hire vehicles, buses, coaches, HGVs, and LGVs/vans
Class D: All of Class C plus cars
Minimum diesel standard (no charge): Euro 6/VI (generally registered from September 2015)
Minimum petrol standard (no charge): Euro 4 (generally registered from January 2006)
Zero-emission vehicles: Exempt from all CAZ charges

Current Clean Air Zones in England

Seven CAZs are live:

Bath: Class C (launched March 2021)
Birmingham: Class D (launched June 2021)
Bradford: Class C (launched September 2022)
Bristol: Class D - small central area (launched November 2022)
Portsmouth: Class B (launched November 2021)
Sheffield: Class C (launched February 2023)
Tyneside (Newcastle and Gateshead): Class C (launched January 2023)

Greater Manchester was removed from the government's CAZ list in February 2025 after a non-charging plan was agreed. Other local authorities may introduce CAZs in future.

Who must pay

You must pay the daily charge if your vehicle does not meet the minimum emission standard for the zone class. This applies to:

Vehicles registered in the UK and abroad
Leased, hired, and owned vehicles equally
Each day the vehicle enters the zone (midnight to midnight)

Common exemptions (vary by local authority):

Military vehicles
Historic vehicles (typically pre-1977)
Vehicles used by disabled persons (blue badge holders) - varies by zone
Certain specialist vehicles (e.g. gritters, emergency response)

Check exemptions with each local authority as they differ between zones.

Check if you need to pay a Clean Air Zone charge

Clean Air Zone Daily Charges and Penalties

Daily charges by vehicle type across UK Clean Air Zones, penalty charges for non-payment, and payment methods.

Daily charges vary by vehicle type and local authority. Charges apply per day (midnight to midnight) for each non-compliant vehicle entering the zone. You must pay the charge by midnight on the sixth day after travel. Most zones allow payment up to 6 days in advance.

HGV/coach/bus daily charge (Bath): £100 per day
HGV/coach/bus daily charge (Birmingham): £50 per day
HGV/coach/bus daily charge (Bristol): £100 per day
HGV/coach/bus daily charge (Bradford): £50 per day
HGV/coach/bus daily charge (Portsmouth): £50 per day
HGV/coach/bus daily charge (Sheffield): £50 per day
HGV/coach/bus daily charge (Tyneside): £50 per day (Newcastle and Gateshead)
Van/LGV daily charge (Class C/D zones): £8-£9 per day (varies by zone)
Car daily charge (Class D zones only): £8-£9 per day (Birmingham, Bristol)

Penalty charges for non-payment

If you do not pay the daily charge within the payment window, you will receive a Penalty Charge Notice (PCN). The penalty is in addition to the unpaid daily charge.

Penalty Charge Notice (PCN): £120 (reduced to £60 if paid within 14 days)
Payment window: By midnight on the sixth day after travel
Advance payment: Up to 6 days before travel

Payment methods

GOV.UK: Pay online via the central Clean Air Zone service at gov.uk
Telephone: Contact the relevant local authority payment line
Auto Pay: Register for automatic payment in Birmingham (set up via local authority)

Each zone uses automatic number plate recognition (ANPR) cameras to detect vehicles. There is no physical barrier or toll booth.

Fleet operator considerations

Each vehicle is charged individually per day per zone
Charges apply in each zone separately if a vehicle enters multiple CAZs on the same day
Consider route planning to avoid zones where possible
Upgrading to compliant Euro 6/VI diesel or Euro 4 petrol vehicles eliminates charges
Some local authorities offer financial support schemes for vehicle upgrades

Check if you need to pay a Clean Air Zone charge

London: a separate system

London operates three independent charging schemes: the Ultra Low Emission Zone (ULEZ), the Low Emission Zone (LEZ), and the Congestion Charge. These are administered by Transport for London, not local authorities. For a non-compliant HGV entering Central London on a weekday, charges can reach £115 per day (LEZ £100 plus Congestion Charge £15) — or £315 if the vehicle does not even meet the Euro IV particulate standard (LEZ £300 tier). Non-payment penalties are severe: £1,000 for an HGV in the £100 LEZ tier and £2,000 in the £300 tier (both halved if paid within 14 days).

London ULEZ, LEZ, and Congestion Charge Requirements

Ultra Low Emission Zone (ULEZ), Low Emission Zone (LEZ), and Congestion Charge requirements for vehicles operating in London, including daily charges, emission standards, and penalties.

London operates three separate charging schemes affecting commercial vehicles. The Ultra Low Emission Zone (ULEZ) covers all of Greater London (expanded 29 August 2023). The Low Emission Zone (LEZ) also covers Greater London but applies only to heavier vehicles. The Congestion Charge applies to a small area of Central London. Each scheme operates independently and charges can stack if a vehicle enters Central London.

ULEZ coverage: All of Greater London (expanded August 2023)
ULEZ daily charge: £12.50 per day (cars, vans, motorcycles, smaller vehicles)
ULEZ minimum diesel standard: Euro 6 (generally registered from September 2015)
ULEZ minimum petrol standard: Euro 4 (generally registered from January 2006)
ULEZ operating hours: 24 hours a day, every day except Christmas Day
ULEZ payment window: By midnight on the third day after travel

Low Emission Zone (LEZ)

The LEZ is a separate scheme from ULEZ and applies to heavier vehicles only. LEZ charges are significantly higher than ULEZ charges and target the most polluting heavy vehicles.

LEZ coverage: Greater London (same boundary as ULEZ)
LEZ applies to: HGVs over 3.5 tonnes, buses, coaches, and specialist heavy vehicles
LEZ daily charge (HGV meeting Euro IV PM but not Euro VI): £100 per day
LEZ daily charge (HGV not meeting Euro IV PM): £300 per day
LEZ minimum standard (no charge): Euro VI (NOx and PM) for HGVs, buses, and coaches
LEZ operating hours: 24 hours a day, every day except Christmas Day

Congestion Charge

The Congestion Charge is a separate daily charge for driving in Central London during charging hours. It applies to all vehicle types regardless of emissions and operates independently of ULEZ and LEZ.

Congestion Charge zone: Central London only (smaller area than ULEZ/LEZ)
Congestion Charge daily rate: £18 per day (£21 if paid by the third day after travel)
Congestion Charge hours: 07:00-18:00, Monday to Friday, and 12:00-18:00 Saturday, Sunday, and bank holidays
Auto Pay discount: Register for Auto Pay to avoid penalty for missed payments

Penalties for non-payment

ULEZ penalty charge: £180 (reduced to £90 if paid within 14 days)
LEZ penalty charge (HGV in the \xA3100 charge tier): £1,000 (reduced to £500 if paid within 14 days)
LEZ penalty charge (HGV in the \xA3300 charge tier): £2,000 (reduced to £1,000 if paid within 14 days)
Congestion Charge penalty: £160 (reduced to £80 if paid within 14 days)

Combined daily cost example

A non-compliant HGV entering Central London on a weekday could face all three charges:

ULEZ: Does not apply to HGVs (ULEZ covers cars, vans, motorcycles)
LEZ: £100 (for non-compliant HGV)
Congestion Charge: £18
Total: up to £118 per day

A non-compliant van entering Central London on a weekday:

ULEZ: £12.50
LEZ: Does not apply to vans
Congestion Charge: £18
Total: up to £30.50 per day

Checking compliance and registration

Use the TfL vehicle checker to confirm whether your vehicle meets ULEZ and LEZ emission standards before travelling. Register for Auto Pay to receive automatic billing rather than risking penalty charges for missed payments.

Check your vehicle meets London emission standards

Managing compliance: your options

Operators typically choose between three strategies, depending on fleet age, route patterns, and budget:

Upgrade the fleet: Replacing non-compliant vehicles with Euro 6/VI or zero-emission alternatives eliminates charges permanently. Some local authorities offer grants or financing support for fleet upgrades through Clean Air Fund schemes.
Plan routes to avoid zones: If only occasional trips pass through a CAZ, re-routing may be cheaper than upgrading. Use each zone's online checker to map boundaries before planning routes.
Absorb the charges: For operators with a small number of non-compliant vehicles making infrequent zone entries, paying the daily charge may cost less than replacing vehicles. Calculate the annual cost before deciding.

How this connects

Emission requirements interact with other fleet decisions. Vehicle excise duty rates, operator licence conditions, and customer requirements for sustainability reporting all point in the same direction: newer, cleaner vehicles reduce multiple cost pressures simultaneously.

Clean Air Zone and emission zone resources

Check if you need to pay a Clean Air Zone charge (opens in a new tab)
GOV.UK central CAZ checker and payment service
gov.uk
Ultra Low Emission Zone (ULEZ) (opens in a new tab)
TfL guidance on ULEZ including exemptions and vehicle checker
tfl.gov.uk
Low Emission Zone (LEZ) (opens in a new tab)
LEZ requirements for HGVs, buses, and coaches in London
tfl.gov.uk
Scottish Low Emission Zones (opens in a new tab)
Transport Scotland LEZ guidance including zone maps and exemptions
lowemissionzones.scot