Are Cheap Padlocks Any Good | When a £20 Lock Is Enough
CEN grades, closed vs open shackle, and the honest truth about cheap padlocks. Know where to save £15 and where it costs you £1,500.
Half the sheds in Belper Lane End are secured with a padlock that cost less than a bag of compost. Some of those sheds hold a lawnmower and three plant pots. Others hold £3,000 of power tools, a bike, and a compressor. The padlock on both looks roughly the same from the outside.
That is the problem we're actually solving here.
The Myth: Price Equals Security
The thing people repeat is simple: "It's only a padlock, they're all much the same." Or the inverse: "An expensive padlock must be better." Neither is reliable as a buying rule. A £20 padlock from a hardware shop can be genuinely fine for certain jobs. A £45 padlock with no rating whatsoever can be almost useless. Price is a bad proxy for resistance.
What matters is the CEN grade, the shackle design, the body material, and whether any of those things match the actual threat you're facing.
What CEN Grades Actually Test
The European standard for padlocks is EN 12320. It runs from Grade 1 to Grade 6. These aren't marketing tiers, they're pass/fail tests with specific attack methods and minimum resistance times.
| CEN Grade | What the test includes | Typical application |
|---|---|---|
| 1 | Minimal resistance, hand tools only | Low-risk, symbolic locks |
| 2 | Slight resistance, basic tools | Garden gates, low-value sheds |
| 3 | Medium resistance, levering and sawing | Garages, moderate-value storage |
| 4 | High resistance, angle grinder, picking | Commercial units, high-value sheds |
| 5 | Very high resistance, sustained attack | High-security commercial |
| 6 | Maximum resistance | Specialist/critical applications |
Most padlocks sold in DIY sheds carry no grade at all, or a Grade 1 or 2 they don't advertise clearly. A Grades 1 or 2 padlock will stop opportunist interference in a light wind. It won't stop someone with a cheap angle grinder who has thirty seconds and any motivation.
For a domestic shed in Heage or Holbrook holding real value, you want Grade 3 as an absolute floor. Grade 4 if the shed backs onto a quiet lane or alley.
Open Shackle vs Closed Shackle: The Bit Most People Get Wrong
The shackle is the U-shaped metal loop. On most cheap padlocks it's exposed, sometimes 25 to 30 mm of it sticking out on each side. That exposed section is where bolt cutters and angle grinders do their work fastest.
A closed-shackle padlock shrouds the shackle inside a hardened body. There's almost no exposed metal to grip with cutters. It takes noticeably longer to attack and requires a different tool setup.
This matters more than the price of the lock itself. A Grade 3 closed-shackle padlock at £35 to £45 is a harder target than an open-shackle Grade 4 at £60. The geometry is simply less cooperative.
Brands worth looking at in this range: Squire SS50CS, Abus 83CS, Mul-T-Lock C13. All closed-shackle, all properly graded. None of them flashy, which is fine.
Where a £20 Padlock Is Perfectly Reasonable
I'm not here to tell you every padlock needs to be a Sold Secure Gold rated fortress. That would be daft.
A cheap padlock earns its place in a few genuine scenarios:
- A garden gate that is never locked when you're home, just kept shut to stop the dog escaping
- A storage cupboard inside a building that is already separately secured
- A trailer hitch cover or similar deterrent, where it supplements a proper hitch lock
- A school locker, allotment tool shed with nothing valuable inside, or a holiday static caravan gate you're locking to discourage casual wanderers
The common thread is low-value contents, or it's a secondary barrier where a primary one is already doing the real work. The £20 padlock isn't protecting anything on its own.
Where It's False Economy
A property in Openwoodgate I visited last year. The homeowner had a substantial workshop in the garden, decent metalworking lathe, welding kit, a collection of hand tools accumulated over decades. Total value somewhere north of £4,000. Secured with a £17 open-shackle padlock on a hasp.
The hasp itself was a problem too, four screws into the door frame, no security washers, bolt heads exposed. But even setting that aside, the padlock would have lasted about eight seconds with a decent set of bolt cutters.
He'd gone on to the next-door shed (holding garden furniture, a broken mower, and some pots) and fitted a heavier-looking padlock there. Why? "That one's newer, so the lock looks better." The tool shed padlock was original to the building.
The tools were replaced on insurance, eventually, after a three-week wait and a £350 excess. A Squire SS50CS or an Abus 83/55 would have cost £38 to £50 fitted. The maths aren't complicated.
Other situations where cheap is genuinely false economy:
- Sheds holding bikes. A decent bicycle is an easy resale item. Anything over £300 deserves at minimum a Sold Secure Silver rated padlock on a closed-shackle hasp.
- Gates securing rear access to a property. This isn't just about what's on the other side of the gate. It's about whether someone can work unseen once they're through it.
- Commercial units in Ripley or Crich industrial estates. The insurance excess alone will exceed the cost of decent hardware.
- Outbuildings storing medication, firearms, or valuables. Obvious, but worth saying plainly.
The Hasp and Staple Problem
One point that doesn't get enough attention: the padlock is only as good as what it's mounted on.
A Grade 4 padlock on a cheap hasp screwed through thin wood with four 30 mm screws is not Grade 4 security. It's Grade 4 padlock, Grade 1 installation. The weakest link sets the actual resistance level.
A proper security hasp, hardened plate, coach bolts going right through the door with nuts and washers on the inside, hidden bolt heads when closed. That's what lets the padlock do its job. Hasp and staple sets worth fitting: Squire, Abus, Burg-Wachter. All under £25 for a solid version.
What to Actually Do
Ask yourself two questions before buying any padlock.
First: what's the worst realistic outcome if someone gets through this? If the answer is "nothing much," a budget lock is fine. If the answer involves insurance claims, tool replacement, or actual loss of income, grade up.
Second: is the shackle exposed? If yes, look for a closed-shackle version at the same grade. The price difference is usually £10 to £15. That £10 to £15 is doing a lot of work.
For the average Belper or Duffield home with a shed holding the usual mix of garden kit and bikes, a Grade 3 closed-shackle padlock on a decent hasp, properly fixed, is the right answer. It'll cost £40 to £60 all in. It won't stop a determined attacker with unlimited time, nothing short of a vault will. But it will stop the opportunist, and that's who you're actually defending against most of the time.
Locks Local covers Belper and the surrounding DE postcodes, Ambergate, Milford, Wirksworth, Kilburn, and the rest. If you're not sure whether your shed or gate setup is actually doing anything useful, we'll tell you honestly on the call, not after charging for an hour's labour. Average arrival in Belper is under 30 minutes.
Laura Fletcher, Lead locksmith
Laura has been on the tools in and around Belper for over two decades, and has fitted, drilled, picked and sworn at most locks ever sold in the DE postcodes. Strong opinions about nearly all of them.
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