Anti-Snap vs Anti-Bump vs Anti-Pick | Which Threat Is Actually Worth Your Money

Walk into any hardware shop and you'll find cylinders plastered with security claims. Anti-snap. Anti-bump. Anti-pick. Anti-drill. Sometimes all four at once, in bold font, as if the box itself is doing the protecting. The problem is that those words aren't ranked. They're just there, and most people end up buying the lock with the longest list rather than the one that addresses the actual threat to their home.

So let's rank them properly. Not by marketing priority, but by how burglars in the UK actually get through doors.

The Threat Landscape (With Numbers)

The Office for National Statistics and forensic locksmith data both tell the same story: the overwhelming majority of cylinder attacks on uPVC and composite doors in the UK are snap attacks. Estimates vary, but the range sits between 65 and 75 percent of all forced cylinder entries. Bumping and picking together account for a small fraction of the remainder, and a good chunk of those are commercial premises or targeted attacks rather than opportunistic residential break-ins.

Bumping was a genuine concern in the mid-2000s, when bump keys circulated widely and standard pin-tumbler cylinders were everywhere. It's less of a live residential threat now, partly because anti-snap cylinders with hardened steel bars have become common, and partly because bump attacks require a bit of technique and time. Opportunistic burglars don't carry bump keys the way they once did.

Picking is rarer still for residential break-ins. It's quiet and leaves no evidence, which sounds alarming, but it's also slow, skill-dependent, and largely the territory of targeted theft or lock-sport enthusiasts rather than someone who wants to be in and out of a semi in High Brooms in under 90 seconds.

Here's a rough priority table:

Those figures aren't a reason to ignore bumping or picking. They're a reason to sort your priorities before you spend.

Anti-Snap: The One You Definitely Need

Snapping works because the standard euro cylinder profile has a weak point: the section between the outside thumbturn and the cam that operates the lock. Apply enough rotational force with a pair of pliers or a screwdriver, and the cylinder breaks there, exposing the cam directly. The whole thing takes about 20 seconds with no skill whatsoever.

A TS007 3-star cylinder is specifically tested against this. The standard requires a hardened steel sacrificial section that shears off cleanly before the break reaches the cam, leaving nothing exposed to operate. Brands worth looking at include Ultion, Avocet ABS, and the Mul-T-Lock MT5+. All three are TS007 3-star rated and have been independently tested under BS EN 1303 and the CPNI attack test protocols.

If you've got a uPVC door on a TN4 street and you haven't checked your cylinder, this is where to start. Not because the area is especially dangerous, but because the geometry of a standard euro cylinder makes snapping trivially easy regardless of where you live.

One caveat worth knowing: TS007 3-star can be achieved by a cylinder alone, or by combining a 1-star cylinder with a 2-star handle. The combined approach can be cheaper, but a 1-star cylinder on its own offers weaker snap resistance. If you're fitting the cylinder without upgrading the handle, go straight to a 3-star cylinder.

Anti-Bump: Worth Having, Not Worth Paying a Premium For

Bumping exploits the physics of pin-tumbler cylinders. A specially cut key is inserted one tooth short of full depth, then struck sharply while turning. The momentary kinetic energy momentarily lifts all the driver pins to the shear line simultaneously, allowing the plug to turn.

The good news: almost every decent anti-snap cylinder on the market already incorporates anti-bump protection. Ultion, Avocet ABS, and Mul-T-Lock MT5+ all use security pin designs (spools, serrated pins, or sidebar mechanisms) that disrupt the bump key's energy transfer. You're not choosing between anti-snap and anti-bump. You're choosing a cylinder that does both, or one that does neither.

So if someone tries to sell you a cylinder specifically marketed as anti-bump without it also being TS007 3-star rated, be sceptical. Bump protection without snap protection is the wrong priority order for a residential door in Kent.

Anti-Pick: Genuinely Useful, But Context-Dependent

Pick resistance matters most in two situations: commercial premises where keys are held by multiple staff (higher risk of unauthorised copying or inside-job picking), and higher-value residential properties where someone might take the time for a targeted entry.

A Sold Secure Diamond or SS312 Diamond accredited cylinder has been tested against picking attacks sustained over a minimum time period, with professional tools. The Mul-T-Lock MT5+ and Abloy Protec2 are the benchmarks here. The Abloy in particular uses a disc-detainer mechanism with no pins at all, which is a different picking problem entirely.

For a landlord with a rental property in Pembury or a business on the Longfield Road trading estate in Tunbridge Wells, a high pick-resistant cylinder makes sense as part of a key control policy. For a homeowner in Bidborough who wants to stop opportunistic break-ins, it's a secondary concern after snap protection.

Pick-resistant cylinders also tend to cost more. A decent TS007 3-star anti-snap cylinder runs around £35-65 fitted. A Mul-T-Lock MT5+ with full anti-pick credentials can be £90-130 fitted, depending on the size and whether you need a thumbturn version. That's a fair premium if pick resistance is genuinely relevant. It's less justified if you're buying it because it looks impressive on a spec sheet.

Which One Actually Decides It

Three factors:

• Property type. uPVC or composite door with a euro cylinder? Snap is the immediate priority. Timber door with a British Standard deadlock (BS3621)? The attack profile is different, and pick resistance may deserve more weight.
• Who has keys. Family home with one set of keys? Snap and bump protection is sufficient for almost all realistic threats. Rental property with multiple tenants, or commercial premises? Invest in pick resistance and a restricted key profile.
• What you're spending already. A TS007 3-star cylinder like Ultion or Avocet ABS hits all three to a meaningful level. You don't need to spend more unless your risk profile (high-value target, key control issues) genuinely warrants it.

The recommendation is simple: fit a TS007 3-star cylinder and you've addressed the threat that accounts for the vast majority of residential cylinder attacks. The exception is if you're a landlord or run a business where key control matters, in which case step up to an SS312 Diamond rated option with a restricted key profile.

The lock with the most words on the box isn't the safest lock. It's just the one with the best copywriter.

If you're in Southborough or anywhere across the TN postcodes and want someone to look at what you've actually got fitted, Locks Local can usually be with you in under 30 minutes. Prices are given honestly on the call, not on arrival.