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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 Check a plate's year
Quick facts

At a glance

  • 1983Format introduced
  • 21Year letters used
  • 1999Six-monthly changes begin
  • 2001Last 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.

Prefix year letters
LetterIssued
AAug 1983 – Jul 1984
BAug 1984 – Jul 1985
CAug 1985 – Jul 1986
DAug 1986 – Jul 1987
EAug 1987 – Jul 1988
FAug 1988 – Jul 1989
GAug 1989 – Jul 1990
HAug 1990 – Jul 1991
JAug 1991 – Jul 1992
KAug 1992 – Jul 1993
LAug 1993 – Jul 1994
MAug 1994 – Jul 1995
NAug 1995 – Jul 1996
PAug 1996 – Jul 1997
RAug 1997 – Jul 1998
SAug 1998 – Feb 1999
TMar 1999 – Aug 1999
VSep 1999 – Feb 2000
WMar 2000 – Aug 2000
XSep 2000 – Feb 2001
YMar 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

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 Value a plate free
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 →
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 →
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 →
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 →

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