Combination Padlock vs Keyed Padlock: Which is Right for You?

Stood at the shed door with cold hands and no idea where the key's gone? That's the exact moment a combination padlock starts to look very appealing, but convenience isn't the whole story. The right choice between a combination padlock and a keyed one comes down to what you're protecting and how many people need to get at it, not just which one saves you a search through your pockets.

This guide compares the two properly, including the security, the day-to-day practicality and how each one actually performs once it's been outside for a winter. We'll also cover how to reset or change a code if you've just bought one and the instructions have already gone missing

A combination padlock opens with a number sequence you set yourself, while a keyed padlock opens with a physical key. The security difference between them comes down to how each one is built, not which mechanism it uses. A cheap padlock of either type will fail quickly under attack, while a well-built one of either type will hold up. The mechanism is just one part of the picture.

Here's how the two stack up at a glance: 

That said, there are trade-offs worth knowing before you buy.  

Security: Comparing High-Security Combination Locks Against Keyed Alternatives

CEN grading runs from 1 to 6, with grade 3 padlocks required to withstand at least five minutes of sustained attack and grade 5 or 6 locks expected to resist for ten minutes or more, a similar principle to the time-based testing used by the UK's Sold Secure ratings on other security products. Most everyday combination padlocks sit in the lower-to-mid range, fine for sheds and garden gates but not for high-value commercial storage, where it's worth checking our insurance-rated padlocks range instead.

Closed shackle and heavy-duty combination locks close that gap. The Squire CBW85 features an 85mm body with a boron hardened steel shackle and a fully recodeable 5-wheel mechanism offering 100,000 possible combinations. A keyed padlock of similar size will usually still edge ahead on raw resistance, since there's no dial mechanism taking up space inside the body, but the difference has narrowed as combination lock engineering has improved. 

Practicality: Why People Choose Combination Padlocks

The practical case for a combination padlock is simple: there's no key to lose or awkward moment fumbling for the right one in the dark. Most modern combination padlocks are also resettable, so you can change the code whenever you like without buying a new lock. This matters more than it sounds for anyone who's ever been locked out of a shed at 6am because the only key was on a ring that's somewhere in the house.

That said, keyed padlocks have their own practical strengths. A key is faster to operate once you know where it is, since there's no dial to spin through. They're also generally a better fit for situations where you want tight control over exactly who can get in, since a key is harder to share by accident than a number that gets written down or passed along to more people than intended. 

The best combination padlock UK buyers can choose depends on the application, but a handful of options stand out across different needs and budgets. Here's how five of the most popular combination padlocks compare side by side:

For everyday outdoor use on a shed, gate or garden store, the Squire CP50 offers a hardened steel shackle, double locking mechanism and a 50mm die cast alloy body that holds up well against the elements. The Squire SHCB65 sits a step up, with an 11mm boron hardened shackle and a 65mm body suited to gates, workshop doors and use with a security chain. The SHCB65/Chain version adds a retaining chain as standard, so the lock can't be dropped or carried off.

If higher security is the priority, the Abus 190CS60 brings a closed shackle design protected by a shackle guard, with resistance to drilling, bolt cutters and saws built into a hardened steel body. At the top end, the Squire CBW85 and its 100,000 possible combinations represent about as much security as a combination padlock can offer before you'd be better off considering a keyed alternative instead.

If your container, gate or shed sees a lot of rain, it's worth checking the weatherproof padlocks range too, since not every combination lock is built with sealed bodies or corrosion-resistant shackles as standard. 

How to Reset Padlock Combination Codes

Resetting a padlock combination usually means holding the shackle in a specific position while you set a new code, though the exact steps vary between brands and models. If you've searched how to reset padlock combination settings before and found conflicting advice, that's because every manufacturer does it slightly differently. Most resettable combination padlocks follow a similar pattern: pull or hold the shackle out to a set point, which puts the lock into programming mode, then dial in your new combination and release the shackle to lock the new code in.

It's worth checking the instructions for your specific model first, since pushing too hard or holding the shackle in the wrong position can sometimes jam the mechanism rather than reset it. If you've lost the manual, most manufacturers publish reset steps for individual models on their own websites, and it's far quicker to look this up than to guess and risk damaging the lock. 

For businesses managing several access points, the right setup depends on how you want to balance simplicity against individual control. Keyed alike padlocks all open with one key, so staff only need to carry a single key for every gate, container or store on site. That's a real time-saver day to day, and it's a popular choice for sites where the same team needs access everywhere.

Standard padlocks, each with their own unique key, give you more precise control instead. You can hand someone access to one container without giving them the keys to everything else, which suits sites with multiple contractors or departments that don't all need the same level of access.

Combination padlocks offer a third way to manage all this. There's no key to issue, copy or collect back when someone leaves. Updating the code takes a minute, which makes it a flexible option for sites where the team changes often. As with any shared access method, it works best when everyone with the code treats it with the same care they'd give a key.

For sites that want both convenience and tighter access control, restricted or master keyed systems bring the best of both worlds: individual keys for day-to-day use, with a single master key that opens everything when you need it. 

If convenience and resettable access matter more than squeezing out the last percentage point of security, a combination padlock is usually the better fit, particularly for garden sheds, gates and everyday storage. If you're protecting something seriously high-value, on the other hand, or you need the highest CEN grading available, a keyed padlock still tends to win out, especially when paired with a restricted key profile.

Whichever way you lean, checking the CEN grade against what your insurance policy actually requires is worth doing before you buy either type, since roughly three in ten UK insurance claims are rejected overall, and inadequate security is consistently one of the reasons cited. 

Browse our full combination padlocks range to compare the options, or get in touch with our expert if you'd like advice on the right lock for your specific setup.