A licence plate check is a search that uses a vehicle's registration number to look up its recorded history. In the UK it's more commonly called a number plate check, registration check or vehicle history check. You type in the reg, and the report brings together data from several sources so you can see what the seller may not have told you.
The idea is simple: a number plate is linked to one vehicle's records. A check pulls those records into one place, so you can spot problems such as insurance write-offs, outstanding finance or suspicious mileage before you hand over any money.
What a number plate check usually shows
Exactly what you get depends on the provider, but a good UK check typically covers:
- Vehicle details: make, model, colour, engine size, fuel type and first registration date, so you can confirm the car matches the advert and the V5C logbook.
- MOT history: past passes and fails, advisories and recorded mileage readings, based on DVSA test data.
- Insurance write-off status: whether the car appears on the MIAFTR register as Cat A, B, S or N.
- Stolen marker: whether the vehicle has been reported stolen and recorded on the Police National Computer (PNC).
- Outstanding finance: whether a finance company may still have a financial interest in the car.
- Mileage checks: whether recorded readings look consistent or hint at clocking.
- Previous keepers: how many owners the car has had, and sometimes plate or colour changes.
Why it matters when buying a used car
A car can look immaculate and still have a troubled past. A previous insurance write-off might have been repaired cheaply. A mileage figure on the dash might not match years of MOT readings. And if a car is sold while finance is still outstanding, you could face real difficulty later.
Here is what the write-off categories mean in plain terms:
- Cat A: should be scrapped entirely, with no parts to be reused.
- Cat B: the body shell should be crushed, though some parts can be salvaged.
- Cat S: structural damage, repairable and can return to the road after a proper repair.
- Cat N: non-structural damage, repairable and can return to the road after repair.
Cat S and Cat N cars can be legitimate purchases, but they usually sell for less and can be harder to insure or resell. You should know about it before you buy, not after.
What a number plate check can't tell you
It's worth being realistic. A history check shows what has been officially recorded, so it can't tell you everything about a car's condition. Unreported accidents, poor-quality repairs, worn parts and mechanical faults won't necessarily appear. Data can also be incomplete or delayed, and no check can guarantee a car is problem-free.
That's why a check should be one step in your buying process, alongside:
- Inspecting the car in daylight and taking a decent test drive.
- Checking the V5C logbook matches the car and the seller's details.
- Reading the MOT history for repeated advisories or failures.
- Getting an independent inspection for higher-value or older cars.
How to do a number plate check
You only need the registration number, which is on the plate and in the advert. Ideally, run the check before you travel to see the car, so you can walk away from obvious problems early. Compare the results with what the seller has told you, and ask questions if anything doesn't add up, such as a different colour, a lower mileage than the MOT history suggests or a write-off marker nobody mentioned.
If you're looking at a car right now, you can enter its registration on motorpeek.com to see its history before you commit. Motorpeek is an independent vehicle history service and isn't affiliated with the DVLA, DVSA or any government body.
Free checks versus paid checks
Some information is available for free. For example, you can view a vehicle's MOT history on GOV.UK. Free tools generally cover only basic details, though. Paid reports usually add the data that's costly to collect and most useful when buying, such as write-off records, finance and stolen markers. Whichever you choose, check what's included before you rely on the result.
The bottom line
A licence plate check, or number plate check, is a quick way to see a vehicle's recorded history from its registration. It won't replace a proper inspection and can't promise a car is trouble-free, but it can reveal costly red flags in minutes. For most used-car buyers, that makes it a sensible first step.
Frequently asked questions
Is a licence plate check the same as a number plate check?
Yes. Licence plate is the American term, while in the UK people say number plate check, registration check or vehicle history check. They all mean looking up a vehicle's history using its registration number.
What information do I need to do a number plate check?
You only need the vehicle's registration number, which is shown on its number plate and usually in the advert. You don't need the owner's details or the V5C logbook to run a check.
Can a number plate check tell me if a car has been in an accident?
Only partly. It can show if a car was recorded as an insurance write-off (Cat A, B, S or N), but minor or unreported accidents and private repairs may not appear. It's best to combine a check with a physical inspection.