UK Number Plate Laws 2024: Legal vs Illegal Plates Explained
Learn which UK number plates are legal and which are not in 2024. Discover the rules on shortened, 3D, tinted, and spaced plates to avoid fines and stay compliant.
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UK Number Plate Laws: What’s Legal and What’s Not in 2024
When it comes to vehicle modifications, UK number plates have strict guidelines that must be followed. Not only do these regulations ensure the plate is easily readable, but they also keep you on the right side of the law. Here’s what you need to know about legal and illegal number plates in the UK, including rules on shortened, 3D, tinted, and spaced plates.
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Legal Requirements for UK Number Plates
UK number plates must meet specific standards, with the main requirements being font style, size, color, and character spacing. According to the Driver and Vehicle Licensing Agency (DVLA), number plates must display characters in a set font and in either black on a white background for the front plate or black on a yellow background for the rear. Additionally, UK number plates must be made of reflective material to increase visibility.
3D and 4D Number Plates
3D and 4D number plates are increasingly popular, with raised or gel-like characters that add a stylish look. However, not all styles are legal. According to DVLA guidelines, only “3D characters in black” are acceptable, provided they are visible and do not impair legibility. 4D plates are generally discouraged if they create any difficulty in reading or do not meet reflectivity standards. Using colors or outlines that deviate from solid black on standard backgrounds is not permitted.

Tinted Number Plates
Tinted number plates have become a recent trend, but they fall under strict regulations in the UK. Tinted or darkened plates are not legal as they reduce reflectivity and make the plates difficult to read under certain conditions. UK law mandates that number plates remain clear and legible in all light conditions, and plates must meet British Standards (BS AU 145e) for reflectivity. Non-compliant tinted plates may result in fines or a failed MOT.
Shortened Number Plates
Shortened plates are a great way of giving your car a cleaner look and can be done legally, as long as the plates still have the required spacing between characters.

Illegally Spaced Number Plates
One of the most common infringements on number plate law is incorrect character spacing. Many drivers attempt to customize the look by altering the distance between letters or numbers, but this is illegal. Spacing rules are enforced to ensure that Automatic Number Plate Recognition (ANPR) systems can correctly read each plate. Any intentional misplacement of characters or unusual spacing is against DVLA standards and can lead to fines.
What Are the Penalties for Illegal Plates?
If you’re found using an illegal plate, you may face a fine of up to £1,000 and your vehicle may fail its MOT. In severe cases, authorities could confiscate the plate. Staying within legal guidelines for number plates not only keeps your car road-legal but also avoids unnecessary penalties.
How to know if my plate is legal?
UK Number Plate Laws: What’s Legal and What’s Not in 2024 summary.
In short the best way to know is to buy your plates from a respectable number plate company, and look for the BSAU number. All road legal number plates have to have a BSAU number and the supplier company name and postcode on display.
If you are still unsure if your plate is legal or not then feel free to drop us a message on our Instagram HERE