Anti-Snap vs Anti-Bump vs Anti-Pick | Which Threats Are Real in UK Burglaries

Walk into any trade counter and you'll see cylinders covered in badges. Anti-snap. Anti-bump. Anti-pick. Anti-drill. Some boxes manage all four, plus a little gold star for good measure. The marketing implies these threats are roughly equal. They're not. One of them accounts for the vast majority of forced-entry cylinder attacks in England and Wales. One is almost theoretical in real residential burglaries. And one sits somewhere in the middle, used mainly against specific target types.

If you're a homeowner in W5 or W13, a landlord with a terrace in Hanwell, or running a small unit on a Park Royal estate, knowing the actual threat ranking changes what you should spend money on.

How Burglars Actually Get Through Cylinder Locks

The Office for National Statistics Crime Survey and the Home Office's Understanding the Burglar research both point in the same direction: most residential break-ins are opportunistic and fast. The attacker wants to be in and out in under two minutes. That constraint matters enormously when you're evaluating attack methods.

Snapping: the dominant attack

Cylinder snapping, sometimes called lock snapping, works by applying sharp lateral force to the front of the euro cylinder until it fractures at a designed weak point near the cam. Once the front section breaks off, the exposed internal mechanism can be turned with a screwdriver. Total time: thirty seconds to two minutes with no specialist skill. The required tool is a pair of mole grips, a screwdriver, and the knowledge that many cylinders snap.

The National Police Chiefs' Council and Secured by Design have both cited snapping as the most common method of forced cylinder entry in the UK. uPVC doors, which dominate the housing stock across Ealing, Southall, Greenford and Northolt, are particularly vulnerable because the cylinder protrudes from the furniture and the lever handle provides excellent mechanical advantage for snapping.

This is the threat you should be solving first. Full stop.

Picking: niche, skilled, slower

Lock picking requires either single-pin picking (slow, skilled) or raking (faster, less precise). Both require tools, practice, and time. A competent picker can open a cheap cylinder in a couple of minutes. A decent quality cylinder with security pins takes considerably longer, and the attacker is standing visibly at the door the whole time.

Picking does happen, but it's associated with targeted, premeditated crimes: commercial premises, storage units with high-value contents, or situations where leaving no forced-entry marks is operationally useful to the attacker. It's not the method of choice for the opportunistic residential burglary pattern you'll see in Ealing Common or Pitshanger on a Thursday afternoon.

Bumping: largely historical at this point

Bump keys briefly had their moment after a Dutch security researcher published the method in 2005. A bump key is cut to the lowest depth on every pin and struck sharply while turning, momentarily bouncing the pin stacks above the shear line. It's elegant in theory. In practice, it makes noise, requires a specific key blank for the profile, and is conspicuous in a residential street. Cylinders with anti-bump spring-loaded pins or serrated driver pins have been standard in mid-range and above for over a decade.

I rarely see bumping cited in any credible recent UK burglary data as a significant residential attack vector. If your lock is TS007 1-star or above, it almost certainly already resists bumping to a reasonable standard.

The Actual Priority Order

The table makes it look like a close race. It isn't. Snapping is in a different league for residential properties.

What the Standards Actually Test

TS007 is the British Standard for cylinder security, rated 1 to 3 stars. A 3-star cylinder must pass anti-snap, anti-pick, anti-bump, anti-drill, and anti-extraction tests. A 1-star cylinder only needs to meet manipulation resistance (anti-pick and anti-bump essentially). The star rating maps directly onto the threat hierarchy: they put snap resistance in the top tier because the data supports it.

SS312 Diamond grade (the Sold Secure rating) takes a similar approach but adds attack time requirements with specific tooling. A Diamond-rated cylinder must resist a trained operative with professional tools for a defined period.

BS3621 is the standard for deadlocks (mortice and rim), not cylinders. If someone quotes BS3621 for a euro cylinder, they've either confused two standards or they're hoping you have.

PAS24 is a door-set standard, not a cylinder standard. It tests the whole door assembly under load. Relevant if you're replacing a door; less so if you're just upgrading a cylinder.

Which Cylinder to Buy

For a residential front door in Ealing, whether it's a semi in Northfields, a maisonette near Ealing Broadway, or a rented terrace in West Ealing: get a TS007 3-star cylinder. That's the minimum specification that addresses the dominant real-world threat (snapping) while also covering picking and bumping.

Brands worth specifying: Ultion 3-star, Avocet ABS, Mul-T-Lock MT5+, Yale Platinum 3-star. These are genuinely different products with different internal architectures, not just a badge on the same cheap brass body.

For a rental property in Southall or Greenford where you want something tenant-proof and insurer-friendly: Ultion or Avocet ABS, both of which come with anti-snap guarantees and are recognisable to insurance assessors.

For a small commercial unit at Park Royal or on the Brentford fringe: a 3-star cylinder on the cylinder lock, plus a BS3621 five-lever mortice, plus you should be having a conversation about whether a euro cylinder is even the right primary security mechanism for a commercial door.

The Lock with the Most Words on the Box

Some budget cylinders now print all four or five terms on the packaging. They meet the letter of each test at the minimum possible threshold. A 3-star TS007 certification from a reputable manufacturer is harder to fake than a list of marketing claims, because it requires third-party testing and carries a test report number. Ask to see the TS007 certificate, or check the cylinder appears on the Secured by Design approved products list.

The words mean something only when they're backed by a test standard and an independent test house. Otherwise they're just words.

If you're in Ealing and want a second opinion on your current cylinder, or you need a 3-star upgrade fitted properly, Locks Local covers W5, W7, W13, UB1, UB2, UB5, UB6 and the surrounding West London postcodes, usually within 30 minutes. Pricing is given honestly on the call before we come out.