How to appeal a ULEZ, Congestion Charge or Clean Air Zone fine

Should I pay within 14 days or appeal?

Most PCNs are halved if paid within 14 days. Making a formal challenge usually pauses the clock, and if your challenge is rejected you’re often offered the discount again — but check the wording of your notice before relying on that.

What are valid grounds to challenge a PCN?

• The vehicle wasn’t in the zone — for example, a misread number plate.
• You weren’t the registered keeper at the time (you’d sold it, or hadn’t yet bought it).
• The vehicle was stolen or cloned. Include a police crime reference.
• The charge was already paid, or the vehicle is registered for Auto Pay/an exemption.
• The vehicle is actually compliant or exempt — send evidence of its Euro standard.
• The penalty is more than the amount due, or the notice contains a procedural error.
• A hire company’s vehicle, where the hirer signed an agreement accepting liability.

Simply forgetting to pay isn’t a legal ground. Authorities do have discretion to cancel a penalty, and a polite first challenge explaining genuine circumstances sometimes succeeds, but don’t count on it.

How do I appeal a ULEZ or Congestion Charge PCN?

1. Pay or challenge within 28 days. Paying within 14 days halves the penalty.
2. Make a formal challenge (representation) to TfL within 28 days of the PCN date, online or by post, with any evidence.
3. If TfL rejects it, you’ll get a Notice of Rejection. You then have 28 days to appeal to the independent adjudicators at London Tribunals.
4. If you ignore the PCN, a charge certificate increases it to £270, and the debt can be registered with the court and passed to enforcement agents.

How do I appeal a Clean Air Zone PCN?

1. Make a representation to the council that issued the PCN within 28 days, with evidence.
2. If it’s rejected, appeal to the independent Traffic Penalty Tribunal within 28 days of the Notice of Rejection. Appeals are free and mostly handled online.
3. If you do nothing, the council can issue a charge certificate increasing the penalty by 50%.

How do I appeal a toll crossing penalty?

Toll crossing penalties follow the same pattern: challenge the operator first, then go to an independent adjudicator if they reject it. Each crossing has its own rules:

• Dartford Crossing: challenge the PCN with Dart Charge within 28 days, then appeal to the Traffic Penalty Tribunal. See forgot to pay the Dart Charge?.
• Blackwall and Silvertown tunnels: challenge with TfL within 28 days, then appeal to London Tribunals. See forgot to pay the tunnel charge?.
• Mersey Gateway: make a representation to Merseyflow, then appeal to the Traffic Penalty Tribunal. See forgot to pay Merseyflow?.
• Tyne Tunnel: dispute the Unpaid Toll Charge Notice with TT2 using the details on the letter. See forgot to pay the Tyne Tunnel?.

What makes an appeal more likely to succeed?

• Keep everything in writing and note every date.
• Send evidence — a V5C, a receipt, a sale notification to the DVLA, a crime reference.
• Be brief and factual; stick to the grounds that apply.
• Never ignore a notice: the cost only goes up.