What happens if you don't pay a ULEZ fine?

If you have a ULEZ fine and you are wondering what happens if you simply do not pay it, here is the honest answer: it does not go away, it grows. A ULEZ penalty starts at £180, drops to £90 if you pay within 14 days, and rises to £270 if it is left unpaid, after which Transport for London can take it through the courts and send enforcement agents.

The reassuring part is that a ULEZ fine will not damage your credit score, and you can still challenge it if it was issued by mistake. So the worst thing you can do is ignore it, and the best thing is to deal with it early, either by paying within the discount window or by appealing if you have grounds. This guide walks through what a ULEZ fine is, exactly what happens at each stage if you do not pay, whether it affects your credit, and how to stop it escalating.

TL;DR: not paying a ULEZ fine

1. The fine - a ULEZ PCN is £180, reduced to £90 if you pay within 14 days.
2. Ignore it - after 28 days a Charge Certificate raises it to £270.
3. Then - the debt is registered at court and can be passed to enforcement agents (bailiffs), with extra fees.
4. Your credit - a ULEZ fine does not appear on your credit file, because it is not a County Court Judgment.
5. You can challenge it - make a representation to TfL, and appeal to London Tribunals for free if rejected.
6. Best move - pay within 14 days if it is correct, or appeal quickly if it is not; do not ignore it.

What is a ULEZ fine, and how much is it?

ULEZ stands for Ultra Low Emission Zone, the London-wide scheme that charges older, more polluting vehicles £12.50 a day to drive within it. The zone covers all London boroughs and runs 24 hours a day, every day except Christmas Day. If your vehicle does not meet the emissions standards and you do not pay the daily charge, TfL's cameras flag it and a Penalty Charge Notice (PCN) is issued to the registered keeper.

It helps to keep two separate amounts clear in your mind:

1. The daily ULEZ charge - £12.50 for a non-compliant vehicle on a day you drive in the zone.
2. The ULEZ fine (PCN) - a much larger penalty if you should have paid the daily charge but did not. According to TfL's ULEZ penalty charges, this is £180, reduced to £90 if you pay within 14 days.

Note that a ULEZ fine is more than a congestion charge fine, which is £160; the two are separate schemes, so you can owe both on the same day. For how ULEZ sits alongside other penalties, see how much is a parking ticket in the UK.

What happens if you don't pay a ULEZ fine, stage by stage?

Ignoring a ULEZ PCN moves it through a set series of stages, and the cost climbs at each one:

1. The PCN is issued - £180, or £90 if you pay within 14 days of the date of service.
2. After 14 days - the discount is gone and the full £180 is due. You still have until 28 days to pay or to make a formal challenge.
3. After 28 days - if you have neither paid nor challenged, TfL can issue a Charge Certificate, which increases the penalty by 50% to £270.
4. Order for Recovery - if it remains unpaid, TfL can register the debt at the Traffic Enforcement Centre, a court based in Northampton. You normally get a further 21 days to pay or to respond.
5. Enforcement agents - if it is still unpaid, a warrant can be issued and enforcement agents (bailiffs) instructed, adding their own fees and, ultimately, the power to take goods.

So a fine that could have been settled for £90 can climb to £270 plus court and enforcement costs. GOV.UK's guidance on challenging a penalty charge notice confirms the same escalation framework, and there is more detail in what happens if you ignore a parking ticket and the PCN deadline guide.

Does a ULEZ fine affect your credit score?

This is the question that causes the most worry, and the answer is reassuring: no, a ULEZ fine does not affect your credit score. A ULEZ PCN is a civil penalty from TfL, and when it is unpaid it is enforced through the Traffic Enforcement Centre, not registered as a County Court Judgment (CCJ). Because it is not a CCJ, it does not appear on your credit file and will not lower your credit score, however far it escalates.

This is where ULEZ and council fines differ from private parking tickets. An unpaid private Parking Charge Notice can be taken to the county court by the parking company, and if a CCJ is entered against you, that does sit on your credit file for six years. A ULEZ fine does not work that way. So the real risk of ignoring a ULEZ fine is the rising cost and the eventual bailiff action, not your credit rating. Even so, the simplest way to avoid all of it is to deal with the fine early.

Can you still pay or challenge it at each stage?

Yes, and acting sooner is always cheaper and easier:

1. In the first 14 days - pay at the £90 discounted rate if the fine is correct, or challenge it.
2. Within 28 days - pay the full £180, or make a formal representation to TfL setting out why it should be cancelled. Making a representation pauses the deadline while TfL considers it.
3. If TfL rejects your representation - you will receive a Notice of Rejection, and you can then appeal for free to the independent adjudicator at London Tribunals within 28 days.
4. At the Order for Recovery stage - if you never received the original PCN, you may be able to file a statutory declaration or witness statement to have the order set aside and the process restarted.

Common grounds for challenging a ULEZ fine include having actually paid the daily charge, your vehicle being compliant or exempt but wrongly classified, the camera misreading your number plate, or you no longer owning the vehicle on that date. Gather evidence such as a payment confirmation, your V5C logbook or proof of sale. If you would like help building a challenge, see how to appeal a parking ticket.

"This article is general information, not legal advice. Always check the dates and details printed on your own notice, and seek qualified advice for anything serious or high value."

The simplest way to stay on top of a ULEZ fine: SnapMyFine

Most ULEZ fines escalate for one avoidable reason: a missed deadline. SnapMyFine is built to stop that happening. Snap a photo of the notice and the app reads the issuer, the reference, the amount and the deadline, explains in plain English what it means, and tells you honestly whether to pay it or challenge it. Where supported, you can pay securely through FCA-regulated UK Open Banking, with no card needed and a digital receipt, and the app reminds you before the 14-day discount window closes so a £90 fine never quietly becomes £270. If you manage several vehicles that pick up ULEZ charges, the same workflow scales through SnapMyFine for fleet operators.

Common mistakes to avoid

1. Ignoring the fine in the hope it disappears; it only grows and heads towards enforcement agents.
2. Missing the 14-day window and paying £180 instead of £90, or letting it climb to £270.
3. Assuming it will wreck your credit and panicking; a ULEZ fine is not a CCJ and does not touch your credit file.
4. Paying when you actually have grounds to challenge, which ends your right to appeal.
5. Forgetting to tell the DVLA when you move or sell a vehicle, which is how many people miss the notice entirely.

Deal with your ULEZ fine in seconds with SnapMyFine

You do not have to face the TfL portal and a ticking deadline alone. Download SnapMyFine free on iOS and Android, photograph your ULEZ PCN, and the app reads the details, tells you honestly whether to pay or appeal, and lets you pay securely through Open Banking with no card needed and a digital receipt. It even reminds you before the discount window closes. Snap your fine and take control in seconds.

Frequently asked questions

What happens if you don't pay a ULEZ fine?

It escalates. The £180 penalty (or £90 if paid within 14 days) rises to £270 after 28 days through a Charge Certificate, then the debt can be registered at court and passed to enforcement agents, who can add fees and take goods.

How much is a ULEZ fine?

A ULEZ PCN is £180, reduced to £90 if you pay within 14 days, and increased to £270 if it is unpaid after 28 days. The daily ULEZ charge itself is £12.50.

Does a ULEZ fine affect your credit score?

No. A ULEZ fine is enforced through the Traffic Enforcement Centre, not as a County Court Judgment, so it does not appear on your credit file. Only an unpaid private parking charge that becomes a CCJ would affect your credit.

Can you go to prison for not paying a ULEZ fine?

No. A ULEZ fine is a civil penalty, not a criminal matter, so there is no risk of prison or a criminal record. The consequences are financial: a higher charge and possible enforcement agents.

Can you appeal a ULEZ fine?

Yes. Make a formal representation to TfL first, and if it is rejected you can appeal for free to the independent adjudicator at London Tribunals within 28 days of the Notice of Rejection.

What happens if a ULEZ fine goes to bailiffs?

If the debt reaches the enforcement stage, agents can add fees and, as a last resort, take goods to recover the amount. They must give you notice first, and you can still resolve it, so do not ignore their letters.

Is a ULEZ fine the same as a congestion charge fine?

No. They are separate schemes. A ULEZ PCN is £180 and a congestion charge PCN is £160, and a single non-compliant trip into central London could trigger both.