How do I prove the ANPR camera got the timestamps wrong?

Request the ANPR entry and exit photographs from the operator. They must produce these on demand. A bank statement showing a car wash, fuel purchase, or shop transaction near the car park timed during the alleged parking event can corroborate that you were not parked during part of the ANPR-recorded period.

The PCN has my registration slightly wrong — is that a complete defense?

Potentially. Under POFA 2012, Schedule 4, Para 8(2), the Notice to Keeper must identify the vehicle. If the registration is wrong, the NtK does not correctly identify your vehicle. Request the ANPR photographs and, if they show a different vehicle, the charge cannot be maintained against you as keeper.

My stay was within the limit based on my own records but the ANPR says I overstayed — who do I believe?

Challenge it. The operator's ANPR data is not automatically accurate. Request the entry and exit photographs and check whether the timestamps correlate with your own records. Witness statements and transaction records from nearby shops can corroborate your account.

Can ANPR data be wrong by enough to make a difference?

Yes. Published studies on ANPR accuracy cite error rates of 1–5% on plate reads in poor conditions. Timestamp synchronisation errors of several minutes have been documented. An error of 3 minutes in a 60-minute zone combined with the 10-minute grace period can turn an apparent 7-minute overstay into a valid stay.

ANPR Camera Misread — How to Dispute the Timestamps

By GetRighted Legal Research TeamLast updated July 2026

Summary

Automatic Number Plate Recognition cameras record your vehicle registration at a camera line — not at your actual parking space. They can misread plates (particularly dirty, damaged, or non-standard plates), record the wrong vehicle entirely, or generate timestamp discrepancies when cameras are not synchronised with accurate time. If your charge is based on ANPR data that does not accurately reflect your stay, the contractual and evidential basis for the charge is undermined. You have 28 days from the Notice to Keeper to challenge.

Immediate Actions

Check these before drafting your appeal:

✓Compare the ANPR timestamps on the PCN to your actual arrival and departure times
✓Check whether the vehicle registration on the PCN matches your number plate exactly
✓Photograph your number plate — note any dirt, damage, or non-standard spacing
✓Check if any alternative payment or permit record supports your actual stay duration
✓Note the distance between the camera position (typically at the entrance gate) and your parking space
✓Keep the NtK envelope — check postmark for POFA 2012 14-day rule

Appeal Steps

Challenging ANPR-based charges:

1Day 1–28 from NtK: Submit Stage 1 appeal with evidence of inaccurate timestamps or misread plate
2Request the operator's ANPR photographic evidence — they must produce it if asked
3If rejected: Request POPLA (BPA) or IAS (IPC) reference
4At POPLA/IAS: request all ANPR images and camera calibration records
5Independent decision: POPLA/IAS review ANPR accuracy claims seriously

Types of ANPR Error

Plate misread: common with dirty plates, non-standard fonts, or plates with similar characters (0/O, 1/I). Check the PCN registration against your actual plate character by character. Wrong vehicle: occasionally ANPR records a nearby vehicle's registration against the wrong bay. Timestamp drift: cameras not synchronised with accurate time can record entry or exit up to several minutes off, which matters for stays near the permitted limit. Camera-to-space delay: entry cameras record when you cross the gate line, not when you are parked. A 3–5 minute reduction for driving to and from the space is a legitimate argument.

What to Expect

Operators are required to produce ANPR photographs on request at POPLA. Where the plate misread is clear from the images, POPLA assessors uphold the appeal. Timestamp challenges are more nuanced — you need to explain why the actual stay was shorter than the ANPR records and provide corroborating evidence where possible. Published POPLA data shows ANPR error grounds succeed where specific, evidenced discrepancies are identified.

Sources

Protection of Freedoms Act 2012, Schedule 4, Paras 8 and 9
BPA Code of Practice, Section 13
POPLA Annual Report (latest published edition)

Frequently Asked Questions

How do I prove the ANPR camera got the timestamps wrong?: Request the ANPR entry and exit photographs from the operator. They must produce these on demand. A bank statement showing a car wash, fuel purchase, or shop transaction near the car park timed during the alleged parking event can corroborate that you were not parked during part of the ANPR-recorded period.
The PCN has my registration slightly wrong — is that a complete defense?: Potentially. Under POFA 2012, Schedule 4, Para 8(2), the Notice to Keeper must identify the vehicle. If the registration is wrong, the NtK does not correctly identify your vehicle. Request the ANPR photographs and, if they show a different vehicle, the charge cannot be maintained against you as keeper.
My stay was within the limit based on my own records but the ANPR says I overstayed — who do I believe?: Challenge it. The operator's ANPR data is not automatically accurate. Request the entry and exit photographs and check whether the timestamps correlate with your own records. Witness statements and transaction records from nearby shops can corroborate your account.
Can ANPR data be wrong by enough to make a difference?: Yes. Published studies on ANPR accuracy cite error rates of 1–5% on plate reads in poor conditions. Timestamp synchronisation errors of several minutes have been documented. An error of 3 minutes in a 60-minute zone combined with the 10-minute grace period can turn an apparent 7-minute overstay into a valid stay.

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