Bath Clean Air Zone — Approved Retrofit Certificate Held

Bath's Clean Air Zone allows buses, coaches, taxis, and heavy goods vehicles to enter if they hold a valid certificate from the government-approved retrofit scheme (called CVRAS). This scheme certifies that pollution-reducing equipment has been fitted to your vehicle. If your vehicle had one of these certificates on the date you got the ticket, the penalty charge should be cancelled.

Legal basis

Bath CAZ Order; Clean Vehicle Retrofit Accreditation Scheme (CVRAS)

How to identify this in your case

Vehicle holds a CVRAS certificate covering the contravention date.

Sample appeal wording

Before you send this

Deadline. A late submission can be turned down without your argument being read. Check your notice for the deadline and how it is counted.
Paying may end it. Paying can count as accepting the notice and can close a challenge already under way. Part-paying or acknowledging an old debt can also revive a time limit that had expired.
The amount can change. Check what happens to the sum if you challenge — it may be held, re-offered lower, or keep rising, and fees or enforcement can continue meanwhile.
Use the official route. Use the method, recipient and form your notice specifies, with any reference, evidence and signature it asks for. Sent elsewhere, it may not count.
Only say what is true. Do not copy any statement of fact unless it is true for you, and check the legal point still applies. Delete what does not fit. It may be treated as your statement.
Careful what you volunteer. Avoid unnecessary admissions — naming the driver or accepting responsibility can remove arguments. But answer anything you are legally required to answer, and do include the evidence your ground needs.
Keep the record. Keep what you sent, the attachments, any receipt, and the reply. Note the next deadline.

Sample wording to adapt and send yourself — it may not fit your notice or the stage you are at. Replace the bracketed prompts with your own details; leave any case citation as it is.

To: Bath & NES CAZ Team Re: CAZ PCN [PCN_NUMBER] This vehicle has a valid CVRAS retrofit certificate ([CERT_NO], issued [DATE], certifying compliance with [STANDARD]). The certificate was valid on the contravention date. Copy enclosed. Under the Bath CAZ Order, CVRAS-accredited retrofitted vehicles are treated as compliant. Please cancel and update DVLA. Yours faithfully, [Keeper Name]

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Sources

Bath CAZ Order
CVRAS
Bath and North East Somerset Council — Bath's Clean Air Zone, including exemptions and the sunset periods:
https://www.bathnes.gov.uk/baths-clean-air-zone