Car Number Plates Explained 2026

Every six months, a fresh set of UK number plates is released, but what do those numbers and letters actually mean? Whether you're buying a new car or just curious about your vehicle’s history, understanding how UK number plates work can tell you a lot.

A number plate is a unique combination of letters and numbers assigned to a vehicle by the DVLA. It acts as an official identifier, linking the vehicle to its registered keeper and recording key details such as MOT history, tax status, and the date and location of first registration.

We’re here to help cut through the confusion around the current and previous car number plate systems and to explain how you can quickly calculate the age of your car.

The current system was introduced in 2001, with plates changing twice annually.

New car number plates change on 1^st March and then again on 1^st September.  They’re made up of three parts…

1. The first two letters of your car’s number plate refer to where it was registered. The first letter is for the region, and the second is for the local DVLA office.
2. The two numbers following this are an age identifier, changed every 6 months at the beginning of March and September. The number in March equates to the current year, while in September, it’s simply the current year plus 50. For example, March 2026 = 26, and September 2026 = 76.
3. The last three letters are chosen randomly and provide the vehicle with a unique identity.

According to the Government, this system is expected to run until February 2051.

The old ‘prefix’ number plate system began in August 1983 as a once-annual plate change. In 1999, it was changed to instead be a change that happened every six months, which then continued as the new system came into action in 2001.

1. The leading letter indicates the year the car was registered, i.e. ‘A’ = 1983.
2. The three numbers following were allocated randomly.
3. Two of the final three letters represented the area in which the vehicle was registered, while the other was a randomly allocated letter.

Before the ‘prefix’ system, there was a ‘suffix’ number plate system between 1963 and 1983, which worked in a similar way.

The letter which identified the year [in this case ‘A’] was at the end of the number plate, rather than at the beginning, although until 1967, the registration year was from 1 January to 31 December. After 1967, the changeover was moved to 1 August.

How Can I Calculate the Age of My Car?

Need a quick way to figure out how old your car is? The table below shows the full list of number plate years, along with their age identifier.

Green number plates were introduced in 2022 to identify electric vehicles that produce zero emissions. You will find while hybrid vehicles produce zero emissions at times they don't have green plates because they still produce some emissions. The green plates are part of the automotive industry's efforts to promote environmentally friendly transportation and reduce pollution.

Private Number Plates are becoming extremely popular. If you want to add a personal touch to your car registration, purchasing a personalised number plate is an excellent option. You can buy personalised plates either directly from the DVLA or through private companies. Some plates can be expensive due to their rarity or significance, so if you're after something truly special, it may be worth researching private auction listings.

After buying your private registration plate, you'll need to arrange for the plate to be manufactured by a high-quality registered number plate supplier and fitted to your vehicle, making sure it follows all legal requirements regarding size, font, and spacing.

The value of your private number plate depends on a few things, such as how short it is, whether it includes common names or initials, and how similar plates are priced. 

If you decide the plate’s no longer for you, you can either gift it to someone else or sell it, either privately or through a dealer who can help you find a buyer and manage the process.

To find out what yours might be worth, you can:

• Use online valuation tools

• Compare it with similar plates on the market

• Ask a number plate dealer for a valuation

When buying a new number plate, there are several important rules to follow, including regulations on spacing, lettering, and colouring. Front plates must have a white background, while rear plates need to be yellow. Additionally, there are specific requirements for the size of the lettering and the spacing between groups of characters. Any number plates that don’t meet these standards are not allowed.

When you purchase a private registration, the original number plate remains associated with your vehicle. This is important because it allows you to revert to your original plate or transfer the private registration to a different vehicle in the future. The old number plate is kept on record, ensuring that it can be re-linked to your vehicle if needed.

If you no longer need your old number plate, you can recycle it. Many local councils and recycling centres accept old number plates, helping to reduce waste and ensure they are disposed of responsibly.

You can’t use it to make an older vehicle look newer. You’re not allowed to use a newer plate on an older car, that would make it seem newer than it really is, which is against DVLA rules. For example, if your plate is from 2015, it can only be used on cars from 2015 or newer. You can’t use it to make an older vehicle look newer. 

If you’re looking to buy a new car with the latest plate, you can browse our brand new vehicles in stock ready to reserve and buy in just a few clicks, or check out our fantastic offers currently available on brand new cars.

On the JCT600 Shop, you’ll find a wide range of accessories and merchandise designed to help you personalise your car and express your style. Whether you need practical items like floor mats and boot liners to protect your vehicle, or you’re looking for branded t-shirts, hats, and other lifestyle products, there’s plenty to choose from. Our collection offers something for every car owner, making it easy to add that personal touch.