Standard Number Plates UK: Legal Requirements, Sizes & Where to Buy (2026)
Quick Answer
Standard UK number plates must comply with BS AU 145e, with white front and yellow rear reflective plates using Charles Wright font and correct character sizing.
When most people order new plates for their car, they order a standard number plate — a flat, printed plate meeting all requirements under BS AU 145e, the British Standard that governs every road-legal plate in the UK. Standard plates are the most widely used type on UK roads: affordable, compliant, and suitable for daily use on any vehicle.
This guide explains the legal requirements, correct sizes, and font rules for standard UK number plates, and shows you where to buy them quickly.
What Is a Standard Number Plate?
A standard number plate uses flat, digitally printed characters on a retroreflective background — white at the front of the vehicle, yellow at the rear. Unlike 3D Gel plates or 4D Laser-Cut plates, the characters are printed directly onto the face of the plate rather than raised above it. Every plate style — standard, 3D, and 4D — must meet the same legal standard, but standard plates are the most economical starting point.
Legal Requirements: BS AU 145e
All UK number plates must comply with BS AU 145e, last updated in September 2021. The key requirements are:
- Font: Charles Wright 2001 — no other typeface is permitted on any road-legal UK plate
- Character height: 79mm for cars; 64mm for two-line motorcycle plates
- Character width: 50mm (except the numeral 1 and letter I)
- Stroke width: 14mm
- Character spacing: 11mm between letters/numbers within a group
- Group spacing: 33mm between the two character groups
- Background: White retroreflective (front), yellow retroreflective (rear)
- Supplier marking: Must show the supplier’s name, postcode, and the BS AU 145e mark
Non-compliant plates will fail an MOT and can attract a fine of up to £1,000. Buy only from a DVLA-registered supplier to guarantee compliance.
Standard Plate Sizes
The most common size for cars is 520 × 111mm. Other sizes include:
- Motorcycle (two-line): 228 × 178mm
- Short/square plates: Various sizes for imported vehicles with non-standard plate apertures
Car Plates Pro supplies all standard sizes — select the correct one at checkout when ordering.
Standard vs 3D vs 4D: Which Should You Choose?
| Feature | Standard | 3D Gel | 4D Laser-Cut |
|---|---|---|---|
| Character finish | Flat printed | Domed gel | Raised acrylic |
| Road legal | ✅ | ✅ | ✅ |
| Price (single) | From £6.99 | From £9.99 | From £9.99 |
| Best for | Budget / any vehicle | Style on a budget | Bold appearance |
Where to Buy Standard Number Plates in the UK
Order standard plates from Car Plates Pro in minutes — enter your registration, choose your size, upload proof of ID and entitlement, and check out. Standard plates from £6.99 per plate, free sticky pads included. Order before 2PM Monday–Friday for same-day dispatch and next working day delivery to 98% of UK addresses. We accept all major cards, PayPal, Apple Pay, and Google Pay.
Frequently Asked Questions
Are standard number plates road legal in the UK?
Yes. Standard flat-printed plates that meet BS AU 145e are fully road legal and pass all MOT checks. They must use Charles Wright 2001 font at the correct sizes and be supplied by a DVLA-registered supplier.
How much do standard number plates cost in the UK?
At Car Plates Pro, standard plates start from £6.99 per plate — or upgrade to 3D Gel from £9.99, 4D Laser-Cut from £9.99 (pair £18), or 4D Gel from £13.99 (pair £23). All include free sticky pads.
What font is used on standard UK number plates?
Charles Wright 2001 is the only permitted font for road-legal UK number plates. It is a specific version of the Charles Wright typeface designed for maximum ANPR camera readability and legibility at distance.
Can I put my own design on a standard number plate?
You can add a national flag (England, Scotland, Wales, or Union Jack) and GB identifier, and a simple border. All text, sizing, and colour requirements remain fixed under BS AU 145e. Any design element that affects character readability is illegal.