Illegal number plates are one of the easiest motoring offences to commit by accident – a stylish font, a closed-up gap, a carbon background – and one of the easiest for police to spot. Here’s what can happen, from a quiet word at the roadside to losing a private registration.
In this guide
The main penalty: up to £1,000
Displaying a registration number incorrectly is an offence carrying a fine of up to £1,000. In many cases officers issue a fixed penalty notice or a vehicle defect rectification notice instead, which gives you a short period – typically 14 days – to replace the plates and prove you’ve done it. Ignore it and you can be prosecuted.
Other consequences
| Consequence | When it applies |
|---|---|
| MOT failure | Any plate that doesn’t meet the display rules |
| Private registration withdrawn | The DVLA can take back a private number that’s displayed misleadingly |
| Insurance problems | Illegal modifications can complicate a claim |
| Prosecution for other offences | Using plates to evade cameras, tolls or charges |
| Vehicle seizure | Being considered for serious and repeat cases |
The DVLA’s power to withdraw a private registration is the one that catches people out. A cherished number can be worth thousands, and it’s lost without compensation. See private number plates.
What police look for
Officers are trained to spot plates that don’t look right, and ANPR cameras flag registrations they can’t read. The most common reasons drivers are stopped:
- mis-spaced registrations – see spacing rules
- non-standard fonts – see the legal font
- coloured or two-tone characters
- show plates on the road – see show plates explained
- tinted, covered or ghost plates – see ghost plates
- missing or unreadable plates – dirty, damaged or obscured
Are tougher penalties coming?
In 2026 the government has been considering tougher penalties for drivers caught with plates designed to dodge enforcement, including penalty points on your licence and, in serious cases, seizure of the vehicle. At the same time, the DVLA has been tightening checks on suppliers. Until new rules take effect, the £1,000 maximum fine and the existing offences apply.
How to avoid a fine
- Buy plates from a registered supplier who checks your documents
- Choose black characters in the standard font with correct spacing
- Keep show plates for shows
- Replace damaged or faded plates promptly
- Clean your plates regularly, especially in winter
Design your plates in under a minute
Type your registration to see road-legal 3D gel, 4D and 5D plates drawn to scale, with legal spacing applied automatically.
Frequently asked questions
Do illegal number plates get points on your licence?
Not currently for a simple display offence – the penalty is a fine of up to £1,000. Penalty points for plates designed to evade cameras have been proposed.
Can police seize my car for illegal plates?
Not normally for a display offence, but seizure has been proposed for serious cases involving plates used to evade enforcement.
I’ve been given a defect notice. What do I do?
Replace the plates within the time stated – usually 14 days – and follow the instructions on the notice to show the defect has been fixed.
Will a dealer-fitted plate protect me if it’s wrong?
The driver is responsible for the plates on the car. If a dealer supplied plates that don’t meet the rules, replace them and take it up with the dealer.
