Anti-Snap vs Anti-Bump vs Anti-Pick | Which Threat Is Actually Worth Worrying About

Walk into any DIY shed and you'll find cylinders plastered with the words "anti-snap, anti-bump, anti-pick, anti-drill". It sounds reassuring. It's also a bit like a car being advertised as having anti-skid tyres, anti-rust coating, anti-UV trim, and anti-theft steering lock, without telling you which of those problems actually writes off the most vehicles each year.

So let's rank the three main cylinder attack methods by how common they genuinely are, then work out what you actually need to buy.

The Three Attacks, Briefly

Before the rankings, a one-paragraph description of each, because a lot of marketing copy conflates them.

Snapping is physical destruction. A burglar grips the outer section of a standard euro cylinder with a pair of mole grips, snaps it off at a weak point in the metal, then uses a screwdriver to retract the cam that holds the door shut. Takes about 20 seconds on a cheap cylinder. No skill required.

Bumping uses a specially cut "bump key" that, when struck with a mallet while turning, causes the pin stacks inside a standard pin-tumbler lock to momentarily jump and shear, allowing the plug to rotate. It requires a key blank for the right profile, a bit of feel, and a few seconds of privacy. Maybe 30 seconds on a vulnerable lock.

Picking is the craft version. Hook picks, rakes, tension wrenches. You're manipulating each pin stack individually until the plug rotates. On a basic cylinder it can take under a minute; on a high-quality one it can take hours, or simply not work.

Which One Actually Happens?

This is where the marketing falls apart. The Office for National Statistics Crime Survey for England and Wales, plus Home Office supplementary data, has consistently shown that the vast majority of residential burglaries in England involve forced entry through doors and windows, not technique-based attacks. "Forced entry" means broken glass, kicked frames, crow-barred doors, or snapped cylinders.

The Metropolitan Police and Surrey/Sussex Police figures from Operation Bumblebee-era reporting put cylinder snapping at somewhere between 25% and 40% of all door-entry burglaries at its peak in the 2010s. The numbers have come down since anti-snap cylinders became more widely sold, but snapping is still comfortably the most documented cylinder-specific attack method in UK residential crime.

Bumping? The published UK police data on bump-key attacks is sparse. That's not because forces don't record it; it's because confirmed bump-key entry is genuinely rare in residential burglary here. Bump keys are legal to own, easy to buy, but using one takes enough time and creates enough noise that a burglar who wants a quick in-and-out tends to prefer a swift snap or a broken pane of glass.

Picking is rarer still in residential context. It's documented in commercial and high-value premises, occasionally in targeted attacks. Your semi-detached in Landport or a rental terrace in Malling is almost never picked. Picking requires patience and skill, and burglars working opportunistically don't carry both.

Here's that as a table:

The rank order is snap, bump, pick. By a considerable margin.

What the Standards Actually Test

TS007 is the British Standard for cylinder security. A 3-star rating requires the cylinder to resist snapping, picking, and drilling to defined test durations. It doesn't specifically test bumping as a standalone category, though anti-bump resistance is implied by the pin-tumbler geometry required to pass the picking tests.

SS312 Diamond, the Sold Secure standard for cylinders, adds anti-bump as an explicit tested requirement alongside snap, pick, and drill. It's the more stringent of the two.

BS3621 and BS8621 cover the lock body (the mortice mechanism behind the door), not the cylinder. A BS3621 bolt is tested for being held back under load, for sawing resistance, and key security. Relevant, but a separate conversation.

If a cylinder claims anti-bump without any third-party certification, treat that claim with scepticism. "Anti-bump" on the packaging of an unrated cylinder usually means spool or serrated pins have been added. That does help. It's not the same as an SS312-rated product that has been tested to destruction by an accredited lab.

Who Genuinely Needs What

Most Lewes homeowners and landlords need anti-snap, full stop. A TS007 3-star cylinder from a reputable brand sorts this. Avocet ABS, Ultion, Mul-T-Lock MT5+, ERA Fortis 3-star. Prices range from roughly £35 to £85 for the cylinder alone, plus fitting. That's the spend that addresses the most probable attack.

Landlords with multiple properties in BN7 and BN8, where the same cylinder profile may be used across several doors, should also think about key control. Mul-T-Lock's restricted keyway system means keys can't be copied at a key-cutting kiosk. Worth the premium if you're managing a portfolio in Ringmer or Newhaven and can't always be certain who's held a key.

Commercial premises, lock-ups, and storage units in the Malling or Cliffe industrial areas: pick resistance starts to matter more. A small business holding stock that could be targeted methodically over several nights is a different risk profile from a domestic front door. An SS312 Diamond cylinder, or an Abloy Protec2 if budget allows, gives you the pick and bump resistance alongside snap protection.

Everyone else: you don't need to buy the cylinder with the longest list of "anti" claims. You need to buy a TS007 3-star cylinder from a brand that has actually been tested, fitted correctly in a door that's in good repair, with a quality handle that's also TS007 rated (the handle matters more than most people realise, because the rosette needs to cover the cylinder snapping point).

The One Exception Where Bump Matters More

If you're in a property that's been targeted before, or you're in a profession that makes you a more considered target (GP, court official, licensed premises owner), the patience-based attacks become marginally more credible. An SS312 Diamond cylinder costs perhaps £20 to £40 more than a 3-star TS007 equivalent. If your risk profile is even slightly elevated, the upgrade is trivial.

The Bottom Line on Labels

Don't buy a lock because it has three "anti" labels. Buy a TS007 3-star or SS312 Diamond cylinder because those labels mean something has been tested by someone independent. Snap is the threat most likely to affect a door in Southover or Wallands. Bump is documented but uncommon in residential UK crime. Pick is real but rare here.

Spend your money in that order of priority.

If you're not sure what cylinder is currently fitted to your door, or whether your handle gives the cylinder adequate protection, Fort Secure covers Lewes and the BN postcodes and can usually get to you within 30 minutes. We'll tell you what you've got, what grade it is, and what it would cost to improve it before we touch anything. No obligation to proceed on the day.