UK vehicle registrations follow specific formats that can tell you when and where a bus was first registered. Here's how to decode them.
Why registrations matter
The registration (number plate) is the most reliable way to identify a specific bus. Unlike fleet numbers, registrations stay with the vehicle through ownership changes and operator transfers.
On BusOva, the registration is typically the primary identifier for a bus entry.
Current format (2001-present)
The modern UK format is: AA00 AAA
First two letters: Area code (where first registered)
Two numbers: Age identifier (tells you when registered)
Last three letters: Random unique letters
Age identifiers explained
The two-digit number indicates when the vehicle was first registered:
March-August: The year itself (e.g., 24 = March-August 2024)
September-February: Year + 50 (e.g., 74 = September 2024-February 2025)
Examples: 51 = Sept 2001, 02 = March 2002, 73 = Sept 2023, 24 = March 2024
Common area codes for buses
Some area codes you'll see frequently on UK buses:
BX, BV, BU: Birmingham area (many manufacturers)
SN: Scotland (Edinburgh)
SK: Scotland (various)
YX, YY, YJ: Yorkshire
LT, LK, LJ: London
MX: Manchester area
BD: Birmingham
FJ: Coventry (Dennis/ADL)
Older formats
Pre-2001 registrations used different systems:
1983-2001: A123 ABC format (letter prefix indicates year)
1963-1983: ABC 123A format (letter suffix indicates year)
Pre-1963: Various local formats
Prefix year letters (1983-2001)
If a registration starts with a letter followed by numbers:
A = 1983/84, B = 1984/85, C = 1985/86...
H = 1990/91, J = 1991/92 (no I used)
P = 1996/97, R = 1997/98, S = 1998/99...
Y = 2001 (last of the prefix system)
Special registrations
Cherished plates: Old-style plates transferred to newer vehicles (can be misleading about age)
Irish registrations: Different format entirely (no age identifier)
Northern Ireland: Uses separate format (three letters + four numbers, e.g., ABC 1234)
Personal plates: May disguise the vehicle's true age
Using registrations on BusOva
Always use the correct format: Include the space (e.g., "SN17 MKJ" not "SN17MKJ")
Check for duplicates: Search by registration before adding a new entry
Don't guess: If you can't read the plate clearly, upload a photo and note it
DVLA lookup: BusOva can check basic details against DVLA data
Common mistakes
Confusing O (letter) with 0 (zero)
Confusing I (letter) with 1 (one)
Missing a letter due to dirt or angle
Assuming cherished plates indicate true age
Mixing up similar plates on batch deliveries
BusOva tip
The registration is your most reliable identifier. When photographing a bus, try to get a clear shot of the number plate - even a quick rear shot can be invaluable for confirming the vehicle's identity.
View real examples on BusOva
See real buses from the community that match what you’ve learned.
