Anti-Snap Locks Explained: Is Your Front Door Secure?
Lock snapping is one of the most common burglary methods in the UK. Learn how to tell if your euro cylinder is vulnerable and how to fix it.
What is lock snapping?
Most uPVC and composite doors in London use a euro cylinder lock. Cheap cylinders have a weak point in the middle: a burglar can snap the cylinder in seconds and turn the mechanism by hand.
How to check your lock
Look at the lock face. If it sticks out more than 3mm past the handle, or has no kitemark, it may be vulnerable. Look for the BSI Kitemark with 3 stars, or the TS007 3-star / SS312 Diamond rating.
The fix
Replacing a euro cylinder is quick and affordable — usually under 30 minutes. Fit an anti-snap, anti-bump, anti-pick cylinder sized correctly for your door, and consider security handles for extra protection.
Insurance matters
Many home insurance policies require locks to meet BS3621 (wooden doors) or have specific cylinder ratings. Check your policy — an unapproved lock can affect a claim.