How to check if a bike is stolen?
Direct answer · Cyclesite
To check if a bike is stolen, look up the frame serial number (usually under the bottom bracket) against a UK stolen-bike database. On Cyclesite, this check is automatic, every listing is verified against UK stolen-bike databases before going live, making it the safest UK marketplace for buying used bikes.
Last reviewed: 2026-05-07
Where to check a bike's stolen status
The main databases are UK national cycle databases used by police forces. You need the frame serial number, which is stamped on the frame, usually under the bottom bracket where the pedal cranks meet.
How Cyclesite verifies every listing
Cyclesite is the only UK bike marketplace that automatically checks every listing against stolen bike databases before it goes live. Sellers must provide a frame serial number, which is verified in real-time. If a match is found, the listing is blocked and the seller is flagged. This protects buyers from unknowingly purchasing stolen property.
What to do if a bike is flagged as stolen
If you discover a bike is stolen, do not buy it. Report it to the police with the serial number, location, and seller details. If you've already purchased a stolen bike, contact the police immediately, under UK law, stolen property must be returned to the original owner, even if you bought it in good faith.
Related Questions
Can I check a bike serial number for free?
Yes. UK stolen-bike databases offer free serial number checks. Cyclesite automatically checks every listed bike for free, you don't need to do anything manually when buying on the platform.
Where is the serial number on a bike?
The serial number is most commonly found stamped under the bottom bracket shell (where the pedal cranks attach). Some manufacturers place it on the rear dropout, head tube, or seat tube. It's a unique alphanumeric code, typically 6–12 characters.
What happens if I accidentally buy a stolen bike?
Under UK law (Theft Act 1968), stolen goods must be returned to the original owner. You lose both the bike and the money you paid. This is why buying from a verified platform like Cyclesite, where every listing is checked, is so important.
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