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Make an informal challenge against a Penalty Charge Notice

You can informally challenge a PCN at any time within the first 28 days, but only if:

  • It has been issued by a Civil Enforcement Officer (also known as traffic warden); or
  • It relates to a bus lane contravention

If you are making an informal challenge do not pay your PCN.

How to challenge

If you believe a PCN should be cancelled the easiest way is to submit an informal challenge online.

Equalities Act 2010 - should you have a disability and require a reasonable adjustment to complete either making a payment or a challenge against a PCN, please call 020 8891 1411.

You will need:

  • The PCN number
  • Vehicle registration number

Make an informal challenge

You can also make an informal challenge by post. You will need to complete our PCN appeals form (pdf, 34 KB) and return to us at: Parking Services, PO Box 221, Twickenham TW1 3TL.

14 day period

We advise you to make a challenge within the 14 day discount payment period. This means that if your challenge is rejected, you will still be able to pay the PCN at the 50% discounted rate. If your challenge is successful, the PCN will be cancelled and no further action will be necessary.


We have provided answers to some frequently asked appeals questions, which you may find useful.

What happens next

Once we receive your informal challenge, your case will be placed on hold, until you hear from us.

If your challenge is accepted, you do not need to pay anything and the case will be closed which will be confirmed in writing.

Rejected challenges

If your challenge is rejected, you will be given an opportunity to pay the PCN, or if you remain dissatisfied with the decision, the next stage of the challenge process is to make a formal representation.

You will need to wait for a 'Notice to Owner' until you make a formal representation.


If you are unhappy about the conduct of a Civil Enforcement Officer (CEO) you can follow our complaints procedure.

Updated: 04 January 2021

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