DVLA rules for legal number plates
What are legal number plates? Why are some number plates illegal?
We guide you through the DVLA (previously known as DVLC) rules for legal number plates. You'll also find, at the end, some common things what you're not allowed to do with you number plate!
Sorry that this is all a bit official-looking... but rules is rules.... :-) You shouldn't need to worry about these... if you go to an authorised manufacturer, they should be fully aware of the DVLA rules. But they're here if you want to check whether your number plates are legal.
- General stuff about legal displaying number plates...
- The basic rules for display of legal number plates
- Number plates fitted on or after 1st September 2001
- Number plates fitted before 1st September 2001
- Traditional (black & silver or white) number plates
- Motorcycle and Tricycle number plates
- Euro (and other flags) on number plates
- Number plate font
- What you must not do with your number plate
- What's the British Standard for number plates?
General stuff about legal displaying number plates.....
The number plates you attach to your car should be made up by a manufacturer who is registered on the DVLA's Register of Number Plate Suppliers (RNPS). They should ask you for your vehicle documents (V5 logbook, and personal ID), as proof that you are entitled to use the registration mark you have requested. This is to prevent fraudulent number plates being requested.
If you have just had a personal registration number assigned to your vehicle, you won't get your new registration document immediately - this comes in the post a few weeks later. In this case, the DVLA will give you a document authorising you to have the number plates made up.
The DVLA rules for legal display of number plates are very specific. Number plates must fit with the British Standard, including the typeface, the size, and colouring. There are alternatives for motorcycles, tricycles and traditional (black and white / silver) number plates.
The basic rules for legal display of number plates:
- You must display a number plate on the front and back of your vehicle
- Letters should be black on a white plate at the front
- Letters should be black on a yellow plate at the back
- The background surface should be reflex-reflecting, but not the letters
- Number plates should meet the British Standard
- Rules on character dimensions differ slightly depending on whether your number plates were fitted before or after 1st September 2001. Details are below.
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Rules on character dimensions differ for traditional 'black and white' plates, which may only be fitted on vehicles manufactured before 1st January 1973. See traditional number plates.
DVLA rules for number plates fitted after 1st September 2001
Any number plate made up after 1st September 2001 must be in accordance with the dimensions as below:
|
Character Height
|
79 mm
|
|
Character Width (except the figure 1 or letter I)
|
50 mm
|
|
Character stroke
|
14 mm
|
|
Space between characters
|
11 mm
|
|
Space between groups
|
33 mm
|
|
Space between vertical lines
|
19 mm
|
DVLA rules for number plates fitted before 1st September 2001
If you fitted a number plate before 1st September 2001, they must meet the dimensions in one of the two groups below:
|
Group 1
|
Group 2
|
|
|
Character height
|
89 mm
|
79 mm
|
|
Character width (except the figure 1 or letter I)
|
64 mm
|
57 mm
|
|
Character stroke
|
16 mm
|
14 mm
|
|
Space between characters
|
13 mm
|
11 mm
|
|
Space between groups
|
38 mm
|
33 mm
|
|
Top, bottom and side margins (minimum)
|
13 mm
|
11 mm
|
|
Space between vertical lines
|
19 mm
|
9 mm
|
Traditional number plates for vehicles manufactured before 1st January 1973
Vehicles manufactured before 1st January 1973 are allowed to display traditional style 'black and white' plates i.e. white, silver, or grey characters on a black plate. The characters size must meet the dimensions in one of the two groups below:
|
Group 1
|
Group 2
|
|
|
Character height
|
89 mm
|
79 mm
|
|
Character width (except the figure 1 or letter I)
|
64 mm
|
57 mm
|
|
Character stroke
|
16 mm
|
14 mm
|
|
Space between characters
|
13 mm
|
11 mm
|
|
Space between groups
|
38 mm
|
33 mm
|
|
Top and bottom margins
|
13 mm
|
11 mm
|
|
Side margin
|
25 mm
|
11 mm
|
DVLA Rules for Motorcycle and Tricycle number plates
All motorcycles and tricycles must display a number plate at the rear of the vehicle. Motorcycles and tricycles registered before 1st September 2001 may display a number plate at the front of the vehicle but are not required to. If you have a two or three wheeled motorcycle or tricycle that has a body type of a four-wheeled vehicle, you MUST display a number plate at the front and back of the vehicle. Two and three-line number plates: Motorcycles registered on or after 1st September 2001 must display a two-line number plate. Motorcycles registered before 1st September 2001 may display a three-line number plate. One-line number plates are illegal, regardless of the date of registration. Here are the character sizes:
|
Character Height
|
64 mm
|
|
Character Width (except the figure 1 or letter I)
|
44 mm
|
|
Character stroke
|
10 mm
|
|
Space between characters
|
10 mm
|
|
Space between groups
|
30 mm
|
|
Top, bottom, and side margins (minimum)
|
11 mm
|
|
Space between vertical lines
|
13 mm
|
Euro (and other flags) on number plates
Vehicles displaying this Euro symbol on the number plate no longer need to use the separate oval shaped national identifier (GB) sticker when travelling within the European Union. All vehicles registered in England, Northern Ireland, Scotland and Wales have, by international convention, the distinguishing sign GB.
Number plate font

Stylised letters (or fixing bolts which alter the appearance of the letters) are not allowed.
What you must not do with your number plate...
- You must not alter, rearrange or misrepresent the letters or numbers
-
Characters must not be moved from one group to the other (e.g. A242 ABC must not be displayed as A242A BC).
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No stylised letters or numbers
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Don't move the spaces around, or change the size of the space
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Don't misrepresent letters / numbers using screws. fixings, tape, etc
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Don't misrepresent letters / numbers using squashed or distorted letters
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No images other than the approved flags (no football emblems, etc)
- Don't put on 'background' images (behind the number plate)
Full details of the requirements are included in The Road Vehicles (Display of Registration Marks) Regulations 2001 Remember: if your number plate is not legally displayed you risk a fine, and could even have the registratin number confiscated.
What's the British Standard for number plates?
The British Standard sets out the physical characteristics of the number plate. This includes visibility, strength and reflectivity. The British Standard also requires each number plate to be permanently and legibly marked with the following information:
- The British Standard number (currently BS AU 145d)
- The name, trademark or other means of identification of the manufacturer or component supplier (the company that made the plate)
- Name and postcode of the supplying outlet.
Other number options:
- A non-reflective border
-
Euro-symbol with national identification letters
Information source: Driver and Vehicle Licensing Agency (DVLA)
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