How does the UK number plate system work?

Car Culture
UK number plate system

“How does the UK number plate system work?”  Asked by many people, many times, over many years…

The current number plate system in Great Britain has been around since September 2001.  Northern Ireland has its own system which is quite different, but today we’re concentrating on the GB system (England, Scotland, Wales).

We’re also not going to discuss any of the previous number plate systems before 2001. The numbering system has changed several times, so maybe we’ll look at previous systems another time.

British number plates are arranged in the format of two letters, followed by two numbers, followed by three letters (eg – XX 00 XXX).  The first two letters are an area code, which refer to the DVLA office where the car was originally registered.

The two numbers are an age identifier, which tells you in which 6-month period the car was first registered.

The last three letters are random.
British number plate system

The numbers change every 6 months, in March and September. The March codes are easy to remember as they follow the year of registration (so a car registered in March – August 2016 has the number 16, a car registered from March – August 2005 has the number 05, etc.). For cars registered in September – February, the code is the year (as of September) plus 50.  So a car registered now (September 2016 – February 2017) will have the number 66 (=16 + 50). A car registered in September 2008 – February 2009 has the number 58 (=08 + 50), and so on.

This system is expected to run until the end of February 2051 (number code would be 00). Personalised number plates are a whole different story and are not covered here.

Number plate trivia

Therefore, it is possible to have an ‘old’ number plate on a ‘new’ car. However, you cannot have a newer number plate code than the one allocated for that car’s date of registration (eg – you can have an ‘04’ plate on a ‘12’ car, but not a ‘12’ plate on an ‘04’ car).

When you change cars, you are allowed to keep your number plate. It simply involves giving the DVLA an unnecessarily large amount of money, filling in an unnecessarily large amount of paperwork and waiting an unnecessarily long time for them to get around to processing it…

Z is only used as a random letter, never in an area code.

It is illegal to use different fonts or space the letters in any way other than illustrated above, despite the fact that thousands of car owners do it. It is also illegal to alter the digits or strategically use mounting screws to make the plates look like they read something different.

Why does Britain have such a pointlessly complicated number plate system?

Technically, that’s a different question, but it very often follows the original question of “how does the system work?”. Beats me, but I guess it gives a lot of public servants in Swansea something to do…

For a more detailed explanation of the system, and for details of number plate systems for other UK territories, Wikipedia has the full details of all area and number codes.

You should also read: The world’s most expensive number plates

MINI with 66-reg number plate


Last updated: January 2017

Stuart Masson
Stuart is the Editor of The Car Expert, which he founded in 2011, and our new sister site The Van Expert. Originally from Australia, Stuart has had a passion for cars and the car industry for over thirty years. He spent a decade in automotive retail, and now works tirelessly to help car buyers by providing independent and impartial advice.


  1. How long before number plates become irrelevant due to GPS tracking of every car by the government anyway? Surely it’s the next step in the war on motorists.

  2. The second number relates to the last digit from the year. The first number (either 0 or 5) relates to its registration date (march & september respectively). the first 2 letters vary depending on WHERE the car is registered ie FX/FY tend to be the lincolnshire ones. The final letters are a random combo. Not sure what will happen in 2010 in regards to the numbers…. ive heard that it will revert to 0-9 again but the march/september numbers will become 1/6 respectively!

  3. I just wish we didn’t have to have yellow plates on the rear. I would much rather have white for both front and rear, yellow just looks stupid on pretty much any car.

  4. I understand the area codes of the current registration system, where the first letter is the official local mnemonic, and the second a local office identifier, but how can I find out what second letter is to be used in, say, 2014 and 2015, for a particular area?

  5. why is the front plate white and the back plate yellow?

  6. stuart

    Hi Debbie,

    Good question. It’s purely to make it easier to immediately spot if a car is coming or going.


  7. I understand that a purchaser of a new vehicle can sometimes select the last three letters of the registration subject to their availability, but I am still waiting for someone to tell me how the second letter (the local office identifier) is determined, and whether the purchaser of a new car can chose it.

  8. stuart

    As far as I know, Mike, the second letter is chosen by the DVLA and not the dealer or the purchaser. The last three letters can sometimes be chosen from a relatively small selection, but the DVLA will hold back any combinations that they deem to be potentially offensive or confusing. Also, popular combinations of letters (eg – SAM or TOM) are usually held back by the DVLA and sold separately for higher profits.

  9. Hi Stuart,

    Thank you for the wonderful blog. I have a question… Can we change the AGE Identifier of the vehicle?

  10. Can you settle an arguement please. What year was registration beginning D270?

  11. stuart

    Assuming that’s a UK number plate, it should be from August 1986 to July 1987.

  12. @ winston, that’s exactly what I was thinking the other day.

    They’re getting rid of the paper tax disc soon, so why not number plates.

    Think about it… a chip could be hidden somewhere in the car during manufacture that could be read easily by the authorities.

    But, then how could I identify a car that was razzing away from a bank robbery if it didn’t have plates on it. Again, though, aren’t they either always stolen or have a false set of number plates on them anyways…

    You can see what keeps me awake….

  13. How much does the resale of a car differ if choosing plates from a march to sept slot as compared to sept to march?

    I have a choice between a march plate or wait till the 1 sept??

    Whats your advise.

  14. stuart

    Hi Sid. It really depends on how long you are going to keep the car. If you plan to keep it for 4-5 years, it will have no real difference to its value by then. If you only plan to keep the car for 1-2 years, a 14-plate car (current plates) would be worth a little bit less than a 64-plate car (new plates from September).
    New car sales plummet in August and February, the two months immediately prior to the plate changes. But this is largely because new car customers prefer to have the latest plates on their car. However, it can mean that there are some good deals to be had if you are buying the car this month.

  15. Thanks Stuart. The car has been fixed on a 4 year finance package. In which case, I note there is not much of a difference with the March OR Sept plates.

  16. Hi there, I was thinking of purchasing a private plate using the 58 as the year identifier. However my car is currently a 2008 car but has an 08 plate, would it still be possible to put my new number plate on this car? Thanks!

  17. stuart

    Hi Bally. Unfortunately this will not be possible. With a private plate, you cannot have a year identifier that is newer than your car. Therefore you could have an 08 identifier or anything older, but not 58 or anything newer.

  18. I have 1998 Volvo v70 automatic 125000 miles petrol what is it’s value?

  19. stuart

    Hi Thomas. Try a specialist car buying site like

  20. Hello British friends from the USA. I agree that the yellow plates are pretty ugly. You make such classy cars; your license plates should enhance them. The black and white ones, or the real old silver and black ones are nice. Yellow, not so. But that’s your business, not mine!

  21. Hi , can anybody tell me please what year is number plate y400jpw. I dont get it. Thanks

  22. stuart

    Hi Mike. 2001 (March-August).

  23. Thanks Stuart. But it is a toyota 2012 , how is that possible? It is a fraud you think?

  24. stuart

    Hi Mike. In that case, it is presumably a private plate that someone has fitted to the vehicle. It is perfectly legal to fit a number plate that is ‘older’ than the car, but you can’t fit a ‘newer’ plate than the age of the car.

  25. What does a 1 plate car look like?

  26. stuart

    Hi Tamara. There’s no such thing as a ‘1’ or ’01’ plate. The current system skipped ’01’ and started with ’51’ before going 02, 52, 03, 53, etc.

  27. Oh right lol thank you

  28. When I was a young lad living in England I had a book that told me the area codes for rego numbers e.g VJ CJ Were Herefordshire , DD DF Were Gloucestershire FK Was Worcestershire Does this still apply and where can I get a list of these area codes?

  29. stuart

  30. The White and yellow scheme is so you know what direction a vehicle is travelling in or parked in when no lights are displayed

  31. I can advise as someone that once worked in a LVLA that the second character is not selectable. Say for example my office area code was ‘A’ then we would issue all plates from AA?? ??? to AZ?? ???

  32. You can assign a registration OLDER than your car, you cannot assign a registration that would make it appear newer

  33. Hi Stuart, I have three simple questions please:
    1. My wife bought me on 25th July 2012 a personalisd plate number SM12BAN. Now I'm looking for a car to buy, what years/months do I have to consider buying the car?
    2. How do I allocate my new personalised plate number to the newer car I purchase instead of its own standard number plate comes with it?
    3. What can I do with the plate number comes with the car I buy? Do I keep it or sell it or ? DVLA mentioned in one of their information that I need to send that plate number back to them. If that so, How can I sell this car in future without a plate number if DVLA takes it? any advice please
    Many thanks

  34. Stuart Masson

    Hi Sam. You can't put that plate on any car older than a '12-plate' (no older than March 2012). Anything newer is fine, but you can't put a 'newer' plate on an 'older' car.

    You need to put the number plate on retention (google DVLA number plate retention form). It will cost you about £105 (because the DVLA are shameless thieves), and will take about 6 weeks to sort out (because the DVLA are useless). Your car will revert to its original number plate, so if you haven't kept the old plates then you will need to get some new ones made.

    If you're buying a new car, the dealer can arrange to have your new car fitted with the new plate when you collect it. If you're buying a used car, you have to arrange a number plate transfer through the DVLA (again, will take a few weeks because the DVLA apparently isn't aware that the internet exists).

  35. I have searched through many sites trying to identify the issuing area with the codes commencing J but all state that this has not yet been allocated. I have seen three cars with area codes JT09 or JH10 and cannot believe that every site is outdated re this information. Any clues where I could find this info?

  36. Stuart Masson

    Hi Alexa. As far as I know, the letter J is not used at the start of any regular-issue number plates at the moment. It is likely that these plates will be personal plates, where the owner has picked out their letters and numbers and paid extra for it.

  37. I'm really confused. I have a car that was manufactured in 2001 in Ireland. .. It had an irish number plate originally (obviously) it was imported to England in 2003 and was given a personalised number plate. I bought the car a couple of years ago and the previous owner wanted the personal number plate back so I applied to the dvla for a new one and they sent me a 53 plate… surely that isn't right is it?

  38. Stuart Masson

    Hi Natasha. The 53-plate reflects the date that the vehicle was first imported into the United Kingdom (September 2003 – February 2004). The DVLA does not have access to registration data from other countries, so it can't verify the first date of registration when the car was new.

    Your car's build plate may show a date of manufacture for 2001, but this doesn't mean that it was registered in 2001. Newly-built cars often sit in stock somewhere until they are sold, which could be weeks, months or sometimes more than a year.

  39. WHY do I have a 55 reg on my car but logbook says 1st registered in 2009??

  40. Stuart Masson

    Hi David. It may have been changed by the previous owner; it is perfectly legal to fit an 'older' plate than was originally fitted to the car, but you can't fit a 'newer' plate. So you can have a 55-plate but you couldn't have a 62-plate, for example.

    If you do a history check on the car, you will probably find that it originally came with an 09- or 58-plate.

  41. Stuart i recently bought a French Renault Clio produced in 2004 it was Pushed into the UK in 2014 but they gave me a 15 plate

  42. why?

  43. Stuart Masson

    As far as I know, it was a policy brought in to prevent people trying to pass off cars as being newer than they really are (presumably to help buyers too lazy to look at a logbook).

  44. Does the law say that you have to have front number plates? I see expensive supercars around London with no number plate on the front all the time.

  45. Stuart Masson

    Hi Lee. Yes, the law states that all cars must have a front number plate. However, the fine is quite small (it used to be £30, not sure if has increased) so those who can afford the supercars can afford to pay the fine many times over if they don’t want to have a front number plate.

  46. Actually thats incorrect. Yellow plates were used at the rear as they are a softer colour. You cannot have white lights at the rear of a vehicle, and ditto the number plate which is white would reflect too brightly

  47. Stuart Masson

    Hi David. So how does the rest of the world manage with white rear number plates? UK is fairly unique in this regard.

  48. my friend has a car starting plate with ‘O’ letter O and the police have sent a document starting with ‘0’ zero – what is the position here?

  49. In 1963 while on holiday in England, I noticed a number of sports cars had their registration numbers painted on their bonnets (hoods). Have seen only license plates in front since then. Did the law change?

  50. Wow, that is quite a pointlessly complicated system alright. I like what they do in Ireland: Year e.g. 2016 first six months is 161 and second six months is 162. Area Code e.g. D for Dublin, C for Cork KK for Kilkenny etc and then a one to six digit number sequence starting with 1 for the first car registered etc. E.g. 162-KK-123456 or 161-D-1.

  51. We see a large number of new models of vehicles including lorries on the road with number plates starting with just a single letter and then quite often only two digits eg L14 xxx Are they all plates which have been specially transferred from old vehicles to newer ones or is there another system in play? Motorbikes used to qualify for ‘short’ numbers, presumably because they tend to have less space for the plates.

  52. Stuart Masson

    Hi Andrea. Usually they are personal plates, where the owner or company has paid to have those plates on the vehicle. If they want to keep those plates later on, the vehicle will be assigned another number.

  53. @Stuart Masson: Apart from France, Holland, India, Australia and Northern Ireland of course. Not to mention the countries that have red plates to designate the rear of a vehicle..!

  54. Look in an Old “Eagle” Diary (the Boys Comic from the late 50’s) you will find all the Original Style County Reg. prefixes,in fact even Old AA handbooks had these facts.

  55. Hello Stuart, my old Triumph had a unique registration number issued back in 1968 (initial registration); i took the car abroad with me on an overseas posting. Now 20 years later. the car is returning to UK .Is my original reg number still valid ? I still have the original registration documents . Thanks

  56. Stuart Masson

    Hi Robert. Possibly…

    If the vehicle was permanently exported, the original registration number may have been dissociated from the car and sold to someone else as a private plate.

    If no-one has used that plate since it was exported and it is still available, the DVLA may re-allocate it to your car.

  57. Then why not have two number plates, “FRONT” on the front and “BACK” on the back?

  58. In the old days when there was a single letter for a year it used to be really, really bad for the car industry. No one wanted to buy a car in the second-half of the year and just held off until the new licence plate came out. Great for having a major sale day on new plate day, not so good if you’re just trying to get through the winter. They brought out a twice-year change to fix this. When they moved to have a number to represent the year they were worried they’d re-introduce the old problem unless they found a way to represent the part of the year the number plate was issued when they only had 2 digits to do it. Hence the +50 system.

  59. Stuart Masson

    If the government and industry were really concerned about the peaks and troughs in registrations, they would simply adopt an undated system like most countries.

    The car industry and car dealers happily drummed up the significance of having the latest number plates (and continue to do so), so no point complaining that customers won’t buy “old plate” cars in the other months.

What are your thoughts? Let us know below.

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