4D Number Plates

Are 4D Number Plates Legal in the UK?

Yes, 4D number plates are legal in the UK when they are made to the correct DVLA requirements. The plate must remain clear, readable and compliant, with characters shown in the correct size, spacing and font. The characters must also be a single shade of black on the correct reflective background: white at the front and yellow at the rear.

For plates fitted after 1 September 2021, the plate must display the correct BS AU 145e marking, along with the supplier details required by law. GOV.UK also confirms that number plates can have raised 3D characters, as long as the plate still meets the legal display requirements.

At PlateBoss, our 4D number plates are made with road use in mind. Each plate is manufactured to meet DVLA and BS AU 145e requirements, giving you the sharp raised look of 4D lettering without compromising on legality, spacing or readability.

What Are 4D Number Plates?

4D number plates use laser-cut acrylic characters instead of flat printed lettering. Each character is bonded to the plate surface, creating a raised, clean-cut finish that gives your registration more depth and presence.

Compared with standard printed plates, 4D plates have a sharper and more premium appearance. The raised acrylic letters catch the light and give the plate a more defined look, which is why they are popular with drivers who want their vehicle to look modern while keeping a clean road-legal style.

They are a strong choice for everyday cars, private registrations, prestige vehicles, modified cars and anyone wanting a smarter finish. You can choose from options such as 4D 3mm number plates for a clean everyday look, or 4D 6mm number plates if you prefer a bolder raised effect.

Why Choose 4D Number Plates?

A standard number plate does the job, but it does not always suit the finish of a well-kept car. 4D plates give your vehicle a sharper, more premium look while still keeping the registration clear and easy to read.

The appeal is in the detail. The acrylic letters create a crisp raised profile, giving the plate a more modern finish than flat printed characters. It is a simple upgrade, but it can make the front and rear of the car look much cleaner.

At PlateBoss, every road-use plate is made to be clear, durable and compliant. Whether you want a subtle upgrade or something with more presence, our 4D number plate range gives you options to suit the look of your car.

4D 3mm vs 4D 6mm Number Plates

The main difference between 4D 3mm plates and 4D 6mm plates is the height of the raised acrylic lettering.

4D 3mm number plates are the most popular choice for everyday use. They give you a clean raised finish without looking too bold, making them ideal for daily cars, private plates and subtle upgrades.

4D 6mm number plates create a deeper, more noticeable raised effect. The thicker acrylic letters stand out more, which makes them a good choice for modified cars, prestige vehicles and drivers who want the plate to be a stronger part of the car’s overall look.

Both options can be road legal when made correctly. If you want a smart, balanced finish, choose 4D 3mm plates. If you want more depth and impact, choose 4D 6mm plates.

4D Number Plates vs 4D Gel Plates

Both styles use raised acrylic characters, but the finish is slightly different.

4D number plates have sharp laser-cut acrylic letters, giving the plate a crisp, defined and modern look.

4D gel plates add a glossy gel coating over the raised acrylic characters. This gives the letters a smoother, more rounded finish with extra shine and depth.

If you prefer a sharp, clean-cut style, standard 4D is usually the better choice. If you want a glossier and more premium raised finish, take a look at our 4D gel number plates or 4D 6mm gel plates.

Order Road Legal 4D Number Plates Online

PlateBoss makes premium road legal 4D number plates in the UK, with options for 3mm, 6mm, gel, bevelled, replacement and specialist plate styles. Every order is made with clear spacing, correct font, compliant materials and the required legal markings.

Before your plates can be supplied, you will need to provide the correct proof of identity and entitlement to the registration. You can check what is needed on our required documents page.

Ready to upgrade your plates? View our full 4D number plates range or choose replacement number plates if you simply need a fresh road-legal set.

View Required Documents