Cylinder snapping is the most common burglary entry method in London. This guide explains how TS007:2012-rated anti-snap cylinders work, which brands offer genuine protection, and what proper installation looks like.
What Is Cylinder Snapping?
Cylinder snapping is the single most prevalent method used by burglars to break into homes in London and across the UK. The technique involves using a pair of mole grips or a similar lever tool to snap the exposed portion of a euro cylinder lock — the round barrel visible on the front face of your door.
Once the external portion is snapped away, the remaining internal stub can be turned with a screwdriver, opening the door in seconds. The whole process takes less than a minute with practice, and the noise is minimal.
Why Are Standard Cylinders So Vulnerable?
Standard euro cylinders — the type fitted in most UPVC doors and many wooden doors — are made to a set length with a defined 'snap point' in the middle. This snap point is a deliberate manufacturing tolerance that, unfortunately, attackers exploit.
The problem has been known for years, and reputable manufacturers have addressed it. Anti-snap cylinders use a sacrificial section design: if force is applied, the external portion snaps away — but it takes only the outer shell with it, leaving the internal mechanism completely intact and locked.
How to Tell If You Have an Anti-Snap Cylinder
Look at your door cylinder from the outside. If it's a standard cylinder:
Anti-snap cylinders often — but not always — have a visible break-line marked on the cylinder body. The surest way to check is to look for an 'SS' or 'TS007' certification mark, or to ask a locksmith to check it for you.
What to Look For When Buying
When choosing an anti-snap cylinder, look for:
**TS007 3-Star Rating** — This is the highest UK standard for cylinder security and the one most insurers recognise. A 3-star rated cylinder has been tested against snapping, picking, drilling and bumping.
**Anti-pick protection** — Many anti-snap cylinders also incorporate anti-pick pins which resist picking attacks.
**Anti-drill protection** — Hardened steel inserts prevent the cylinder from being drilled out.
**Anti-bump protection** — Bump keys are another attack method. Better cylinders include additional security pins to resist this.
Recommended Brands
We regularly install the following anti-snap cylinders and can vouch for their quality:
What Does It Cost to Upgrade?
A standard anti-snap cylinder upgrade in Dulwich or South London typically costs between £65–£120 per cylinder, fully installed. This varies depending on the cylinder length required, the product chosen, and how many cylinders you're having changed.
Given that it's one of the most effective burglary prevention measures available, most homeowners who've had the upgrade done consider it excellent value.
When Should You Upgrade?
If you currently have a standard cylinder on any external door, upgrading is worth doing as soon as possible — particularly if you live in an urban area. If you're moving into a new property, it's the ideal time to assess what's already fitted and upgrade where needed.
If you're unsure what type of cylinder you have, call us and we'll come and check. It takes two minutes, and the peace of mind is worth it.