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The anatomy of a registration

What’s in a UK number plate?

Seven characters can tell you when a car was registered, the part of Britain its registration came from—and a little of motoring history.

Updated 3 September 2026 · 8 min read
Decode a plate ↓
First two lettersWhere
Two numbersWhen
Last three lettersUnique
RA26DVS
Plate decoder

Try one for yourself

Enter a modern Great Britain registration. We’ll translate its age code and the broad DVLA allocation area behind its first letter.

Works with the current AB12 CDE format, used since September 2001.

01 — The format

Three parts. Three jobs.

The current format was designed to create a huge supply of unique registrations while keeping useful clues visible at a glance.

RA

Local memory tag

The first letter points to a broad DVLA region. The pair identifies the local allocation group more closely. “R” registrations are associated with the Reading area.

26

Age identifier

The middle digits show the six-month period in which the registration was first issued. “26” means March to August 2026.

DVS

Random sequence

The final three letters make the registration unique. They do not normally encode a place, date, model or owner.

02 — Reading the age

Why the number changes twice a year

New age identifiers arrive every March and September. March uses the year itself; September adds 50.

March–August: 2026 → 26
September–February: 2026 + 50 → 76

The age code tells you when the registration was issued—not the exact build date. Imported vehicles and transferred personalised registrations need extra care.

Year
Mar–Aug
Sep–Feb
2023
23
73
2024
24
74
2025
25
75
2026
26
76
2027
27
77
2028
28
78
03 — Where it began

The first-letter map

Use the first letter for a quick regional clue. It identifies the DVLA allocation area—not the car’s current home, and not always the buyer’s address.

AAngliaPeterborough, Norwich, Ipswich
BBirminghamBirmingham
CCymruCardiff, Swansea, Bangor
DDeesideChester, Shrewsbury
EEssexChelmsford
FForest & FensNottingham, Lincoln
GGarden of EnglandMaidstone, Brighton
HHampshire & DorsetBournemouth, Portsmouth
KCentral allocationBorehamwood, Northampton
LLondonWimbledon, Borehamwood, Sidcup
MManchester & MerseysideManchester
NNorthNewcastle, Stockton
OOxfordOxford
PPrestonPreston, Carlisle
RReadingTheale
SScotlandGlasgow to Inverness
VSevern ValleyWorcester
WWest of EnglandExeter, Truro, Bristol
YYorkshireLeeds, Sheffield, Beverley

I, Q and Z are not used as the first letter of current local memory tags. Northern Ireland uses a different system, usually containing I or Z.

04 — Before 2001

A century in four formats

Britain’s system has evolved as the number of vehicles grew. Older formats still appear on the road, especially on classics and personalised registrations.

Dateless

A1 or ABC 123. No age marker, which helps explain their appeal as private plates.

Suffix

ABC 123A. The final letter represented the year of issue.

Prefix

A123 ABC. The first letter carried the age clue.

Current

AB12 CDE. Region, six-month age identifier, then random letters.

05 — Staying legal

A plate is an identity, not a typeface experiment

Spacing and legibility matter because people, MOT testers and automatic number plate recognition systems all need to read the same mark.

Based on official DVLA number plate guidance and the INF104 registration guide. Rules can change; check GOV.UK before buying or fitting plates.

Worth knowing

Three plate curiosities

A registration is assigned to the vehicle by DVLA. The physical acrylic sign is the number plate that displays it.

A1

The first one

A1 was the first registration issued in London in 1903, following the Motor Car Act.

Q

The question mark

A Q prefix can be used where a vehicle’s age or identity is uncertain, including some radically altered or kit-built vehicles.

HW

An island exception

Within the H allocation, the HW memory tag is reserved exclusively for Isle of Wight residents.

Common questions

UK number plate FAQs

Quick answers to the details that catch people out when reading, buying or replacing a registration plate.

What do the letters on a UK number plate mean?

On current-style registrations issued in Great Britain since September 2001, the first two letters form a DVLA local memory tag linked to the registration’s allocation area. The final three letters are a random sequence.

How can I tell a car’s age from its number plate?

Read the two middle digits. March to August registrations use the last two digits of the year, while September to February registrations add 50. A 26 plate was issued from March 2026; a 76 plate was issued from September 2026.

Can a private plate make a car look newer?

No. You can assign an older or dateless registration, but DVLA rules do not allow a registration that makes a vehicle appear newer than it is.

What does the green strip on a number plate mean?

The optional green flash identifies a vehicle with zero tailpipe emissions. It does not replace the UK identifier that may be needed when driving abroad.

Do Northern Irish number plates show a vehicle’s age?

No. Northern Irish registrations use a different format, commonly containing I or Z, and do not include an age identifier. That is why some are described as dateless.

A plate is only the beginning.

Use the full registration to check MOT history, mileage, tax status and buying insights.

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