--- title: "Prefix Number Plates Explained: Year Letter Table 1983–2001" description: "Decode any prefix plate: the A–Y year table, the 1999 switch to six-monthly letters, unused letters and the one DVLA rule on which vehicles qualify." url: https://buyprivateplates.uk/number-plate-formats/prefix/ site: "Buy Private Number Plates Online – Instantly Search the DVLA Database" published: 2026-09-29 modified: 2026-09-29 language: en-GB --- # Prefix Number plates 1983 – 2001 ## Prefix Number Plates Explained Eighteen years of A123 ABC. Decode the year letter, see why the system went six-monthly in 1999, and find out which cars a prefix plate can go on. [Prefix plates for sale](https://buyprivateplates.uk/prefix-number-plates-for-sale/) [Check a plate's year](https://buyprivateplates.uk/number-plate-year-checker/) Quick facts ## At a glance - **1983**Format introduced - **21**Year letters used - **1999**Six-monthly changes begin - **2001**Last prefix issued A 123 ABC **Year letter** Prefix identifier **Number** 1 to 999 **Letters** Sequence + area code The year letter moved to the front, followed by up to three numbers and the three-letter group. As before, the last two letters were the local office code. Where it came from ## History of the format When the suffix alphabet ran out in 1983 the obvious answer was to start again, this time with the year letter at the *front*. A-prefix plates arrived on 1 August 1983 and the system reused the same 21 letters, running August to July exactly as the later suffix years had. The pace changed in 1999. Concentrating a year’s registrations into August was distorting the car market, so from S (August 1998) the letter changed every six months: T in March 1999, V in September 1999, W in March 2000, and so on. That accelerated the end of the format — Y was issued from March 2001 and the current two-letter, two-digit system replaced it on 1 September 2001. Because so many combinations exist, prefix plates are the most affordable dated format and the entry point for most first-time private plate buyers. Reading the year ## Prefix year letters Find the identifier on the plate and read the period straight off. Any vehicle first registered in that period **or later** can carry the plate. Not sure? [Type the registration into the year checker](https://buyprivateplates.uk/number-plate-year-checker/). | Letter | Issued | | --- | --- | | A | Aug 1983 – Jul 1984 | | B | Aug 1984 – Jul 1985 | | C | Aug 1985 – Jul 1986 | | D | Aug 1986 – Jul 1987 | | E | Aug 1987 – Jul 1988 | | F | Aug 1988 – Jul 1989 | | G | Aug 1989 – Jul 1990 | | H | Aug 1990 – Jul 1991 | | J | Aug 1991 – Jul 1992 | | K | Aug 1992 – Jul 1993 | | L | Aug 1993 – Jul 1994 | | M | Aug 1994 – Jul 1995 | | N | Aug 1995 – Jul 1996 | | P | Aug 1996 – Jul 1997 | | R | Aug 1997 – Jul 1998 | | S | Aug 1998 – Feb 1999 | | T | Mar 1999 – Aug 1999 | | V | Sep 1999 – Feb 2000 | | W | Mar 2000 – Aug 2000 | | X | Sep 2000 – Feb 2001 | | Y | Mar 2001 – Aug 2001 | The gaps in the alphabet ## Letters that were never used As with the suffix system, **I**, **O**, **Q**, **U** and **Z** were never issued as prefix year letters. In the three-letter group, I and Q were also excluded; Z was permitted there only in Northern Ireland. A Q at the front of a plate means the vehicle’s age or identity could not be verified — it is not a prefix plate and cannot be transferred. Where the letters point ## Regional codes and memory tags The last two letters of the three-letter group identified the DVLA local office, so a prefix plate quietly records where the car was first registered. Buyers today rarely care, but it explains why some letter pairs are plentiful (busy offices) and others scarce. The one rule that matters ## Which vehicles can carry this format Read the year from the first letter and the plate can be assigned to any vehicle first registered in that period **or later**. R-prefix (1997–98) on a 2010 car: fine. R-prefix on a 1995 car: not allowed. We show the earliest eligible date on every plate page, and the year checker will confirm any registration you type. [Check any plate's earliest eligible vehicle](https://buyprivateplates.uk/number-plate-year-checker/) From the trade ## Buying tips - Three letters that spell a name or initials with a low number (A1 BCD, R5 XYZ) are the sweet spot for value and readability. - The 1999–2001 six-month letters (S, T, V, W, X, Y) were issued in smaller volumes and can be scarcer. - Single-digit prefix plates command a premium; two and three digits offer most of the look for much less. - Prefix plates suit almost every car on the road today, since anything from 1983 onward is eligible. [Prefix plates for sale](https://buyprivateplates.uk/prefix-number-plates-for-sale/) [Value a plate free](https://buyprivateplates.uk/plate-value-checker/) Common questions ## Prefix Number Plates Explained: FAQ **What year is a P-prefix plate?** P was issued from August 1996 to July 1997. Any vehicle first registered from August 1996 onward can carry a P-prefix plate. **Why do some prefix letters cover only six months?** From 1999 the DVLA changed the letter every March and September to spread new-car sales across the year. S, T, V, W, X and Y are all six-month letters. **Can I put a prefix plate on a car older than the letter?** No. That would make the car appear newer than it is, which DVLA prohibits. It is the only age restriction on any transfer. **Are prefix plates still being issued?** No. The last prefix (Y) was issued in 2001. Every prefix plate on sale today is either unissued DVLA stock or a previously owned registration. Keep reading ## The Other Formats Explained Every UK registration belongs to one of five families. 1903 – 1963 ### Dateless Number Plates The oldest, most prestigious registrations on British roads: what they are, how they were issued, how to read one, and why they can go on a car of any age. [Read the guide →](https://buyprivateplates.uk/number-plate-formats/dateless/) 1963 – 1983 ### Suffix Number Plates The first plates to carry a year letter. Read the suffix table, learn which letters were skipped and why, and see which vehicles can carry one today. [Read the guide →](https://buyprivateplates.uk/number-plate-formats/suffix/) 2001 – today ### Current Style Number Plates The AB51 CDE system: how the two-digit age identifier works, what the memory tag tells you about where a car was registered, and which letters you will never see. [Read the guide →](https://buyprivateplates.uk/number-plate-formats/current/) Dateless · any vehicle ### Northern Irish Number Plates The I and Z plates: why they have never carried an age identifier, how to read the county code, and why they are the best-kept secret for putting a private plate on any car. [Read the guide →](https://buyprivateplates.uk/number-plate-formats/ni/) ## Ready to Find a Prefix Plate? Search live DVLA stock and the pre-owned marketplace. Every price includes the £80 DVLA fee and our full transfer service. [Prefix plates for sale](https://buyprivateplates.uk/prefix-number-plates-for-sale/) [Search all plates](https://buyprivateplates.uk/private-number-plates/) --- Source: https://buyprivateplates.uk/number-plate-formats/prefix/