Understand the difference between DVLA and DVSA MOT records, what each agency manages, and where to actually check a vehicle's current MOT status and history.

DVSA records MOT test results, advisories, failures and test mileage. DVLA manages vehicle registration and road-tax information. People often search for a 'DVLA MOT check', but MOT test records are supplied by DVSA.
The Driver and Vehicle Standards Agency supervises MOT testing standards, authorises test centres, and maintains the database of test results, advisories, failures and recorded mileage.
The Driver and Vehicle Licensing Agency handles vehicle registration, the registered keeper, and road tax (VED). When you check on MotR, MOT comes from DVSA and identity/tax from DVLA.
The DVLA is the agency drivers interact with most — it issues the V5C logbook and collects vehicle tax. MOT testing is run by the separate DVSA, but that distinction is less visible, so drivers frequently search for a "DVLA MOT check" when they need an MOT status or history lookup.
The practical answer is simple: to check MOT status or history, use a tool backed by DVSA data — such as the MotR MOT checker.
Official DVSA data. Free, no account needed.