What is BS3621?

British Standard locks (BS3621) are tested meticulously and must be anti-theft and attack resistant. They must also use a five-lever design, include an anti-pick mechanism and be unaffected by drilling. Many insurance companies will require that your locks meet British Standards, and you can tell if they do by a kite mark which you will find carved into the cylinder of the lock or ask your local Brighton locksmith to check.

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