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UK Registrations · Complete Guide

Vehicle Registration Explained

UK number plates encode date, area, and identity. From the current two-letter, two-number, three-letter format to prefix and suffix plates — here is how to decode any UK registration.

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Vehicle Registration Explained
The short answer

How UK number plates encode age and area

UK number plates follow a standardised format that encodes the registration area and age. Current format (since September 2001): two area letters + two age digits + three random letters (e.g., AB23 CDE). Digits 03–52 indicate March–August year; 53–02 indicate September year. Prefix plates (1983–2001) use the first letter for year. Private plates deliberately obscure age — always check with DVLA or HPI for original registration.

By era

UK Number Plate History: Format by Era

EraFormatExampleHow age is encoded
2001–present (current)AA00 AAAAB23 CDEDigits 3+4: 23 = 2023 Mar–Aug; 73 = 2023 Sep–Feb
1983–2001 (prefix)A000 AAAP123 XYZFirst letter = year (A=1983, B=1984... Y=2001)
1963–1983 (suffix)AAA 000AABC 123DLast letter = year (A=1963, B=1964... Y=1982)
Pre-1963 (old style)VariousABC 123No age indicator — 'dateless' plates
Q plateQ + 6 charsQ123 ABCNo age — issued when age/identity cannot be confirmed
Northern IrelandAAA 0000BEZ 1234Own series; records in same DVSA/DVLA system
Age identifiers

Current Format Age Identifiers (Post-2001)

Age codeRegistration period
03March 2003 – August 2003
53September 2003 – February 2004
23March 2023 – August 2023
73September 2023 – February 2024
24March 2024 – August 2024
74September 2024 – February 2025
25March 2025 – August 2025
75September 2025 – February 2026

Pattern: March plates = year's last two digits. September plates = year's last two digits + 50.

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Questions & answers

Frequently Asked Questions

How do I tell a car's age from its number plate?
For UK plates issued from September 2001 onwards: characters 3 and 4 of the 7-character format encode the year. Plates issued March–August carry the year's last two digits (e.g., 23 = March 2023). Plates issued September–February carry the year's digits plus 50 (e.g., 73 = September 2023). Prefix plates (1983–2001) use the first letter (A=1983, B=1984... Y=2001). Suffix plates (1963–1983) use the last letter.
What do the first two letters on a modern UK plate mean?
The first two letters of the current format (post-September 2001) are the DVLA local memory tag, which indicates the area where the vehicle was first registered. Examples: AB, AC, AD = Anglia region; BA, BB = Birmingham; CA, CB, CC = Cardiff; LA, LB, LC, LD = London (DVLA Wimbledon). The letters I, Q, and Z are not used as area identifiers.
What is the current UK number plate format?
The current format (introduced September 2001) follows: two letters (area code) + two numbers (age identifier) + three letters (random). Example: AB23 CDE. The format allows for 168 million unique registrations. It will need to be updated around 2051 when combinations run out. Q-prefix plates are issued to vehicles where the age cannot be confirmed (e.g., kit cars, rebuilt vehicles).
What do Q plates mean on a car?
Q plates (Q + 5 characters) are issued by DVLA to vehicles where the age or identity cannot be confirmed. Common scenarios: kit-built vehicles, imported vehicles where documentation is incomplete, vehicles rebuilt from multiple identities, or historic vehicles without clear age evidence. Q plates significantly affect insurance (typically higher) and resale value, and should prompt extra scrutiny of the VIN and V5C.
Can I register a vehicle with a foreign plate in the UK?
No — foreign-registered vehicles being brought permanently to the UK must be registered with DVLA and given a UK registration. Drivers have 6 months from import to complete UK registration. The vehicle will need to pass an MOT and pay VED. DVLA issues a new UK registration mark which replaces the foreign plate. The VIN remains the same.
What does a Northern Ireland registration look like?
Northern Ireland registrations use the format: three letters + four numbers (e.g., ABC 1234). The first two letters indicate registration series; the third varies. NI-registered vehicles have DVSA MOT records accessible via the same history service as Great Britain vehicles. Their MOT history and DVLA records are held in the same national databases.
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UK registration formats are administered by DVLA. MotR is not affiliated with DVLA, DVSA or GOV.UK. Registration details are informational; always confirm a vehicle's official record via DVLA. Last reviewed 13 June 2026.

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