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Challenge a Clean Air Zone fine

Bath’s Clean Air Zone (CAZ) is now operational

Don't forget to pay the charge, you will not get a reminder

If charges apply to your vehicle you must pay within 6 days or risk a fine

Not all vehicles are charged - Check your vehicle here

If you think you have received a fine in error, or have mitigating circumstances that you want to tell us about, you can challenge a clean air zone fine. You can do this online or by post.

You have up to 28 days after the date of service (which is two working days, excluding weekends and Bank Holidays, after the post date on the front of the notice) to make your challenge. However, we are unable to extend the 14-day period for discounted payment if your challenge is not accepted.

Before you challenge your fine

To make a challenge to your fine, you will need the following:

  • the penalty charge notice (PCN) number, for example BN12345678
  • your vehicle registration number
  • the web code, for example 123AB456

You can find this information on the notice we sent you about the fine.

Challenge a Clean Air Zone fine online

Other ways of challenging a clean air zone fine

By post

Please send your challenge to: 

Bath Clean Air Zone, Bath and North East Somerset Council, PO Box 5475, Bath, BA1 0AH


You cannot challenge a Clean Air Zone fine over the phone or in person. It must be done in writing. You will need to clearly state the reasons why you want to challenge the fine.

If your challenge is rejected

If we cannot accept your challenge, we will inform you of this by letter. The letter will tell you how you can appeal the decision. The Traffic Penalty Tribunal will handle your appeal, and their decision will be final.

Getting advice

For independent advice, please contact PATROL UK