Cheap weekend breaks in the UK for under £100
16th May 2023
When you click on a retailer link, we may earn affiliate commission, which helps fund our not-for-profit mission. This tracks your activity using third party cookies. By clicking a link you are consenting to this.
In this article
A strong bike lock makes the difference between your ride home being secured, and that sinking feeling when your bike isn't where you left it. Securing your bike with a great bike lock will not only thwart thieves' attempts to steal your bike, it could even put them off trying in the first place.
But with many bike locks looking similar, it can be tricky to know which ones are up to the job and which are likely to let you down. To find out, our lab experts posed as wannabe thieves, using bolt cutters, angle grinders and other lock-breaking tools to identify the locks that will keep your bike safe.
We've also checked how easy they are to transport and use. Nobody wants to be wrestling with an unwieldy bike lock in a torrential downpour.
A Best Buy bike lock will be easy to use and offer good security against even the most powerful tools – meaning a thief is likely to be spotted and interrupted when trying to steal your bike, or just give up.
Read on to discover the pros and cons of different types of bike lock, which bike locks made the grade in our tests, plus our top tips on how to buy the best bike lock.
How to buy the best bike – if you're in the market for a new bike, check our expert guide to getting the bike to suit you.
A summary of all the bike locks we've tested is presented here, so you can compare their scores and pick the one that's right for you.
Click a particular lock to read our full review, or simply scroll down to browse all our reviews of bike locks.
Only logged-in members can view our full bike lock reviews. If you're not yet a member, sign up to Which? today for instant access to this and all our reviews.
Bike lock | Cheapest Price | Overall Score | Strength | Security against hand tools | Security against lock picks | Durability | Where to buy |
---|---|---|---|---|---|---|---|
Abus Bordo Big 6000 (Folding lock) | £56.73 | Amazon(used available only) | |||||
Abus Granit Plus 640 (U-lock) | £81 | Find out more from Abus | |||||
Axa Newton Pro 190 (U-lock) | £40.49 | Triton Cycles Fawkes Cycles Tredz | |||||
Hiplok Gold High 10mm (Chain lock) | £75 | Amazon Hiplok Wiggle | |||||
Kryptonite Kryptolok 685 (Folding lock) | £53.74 | Amazon Rutland Cycling | |||||
Kryptonite New York Lock Fahgettaboudit Mini (U-lock) | £119.99 | Amazon Evans Cycles Sports Direct | |||||
LiteLok Wearable Gold Large (Textile lock) | £88 | Sports Direct Evans Cycles |
A lock is only as good as how and where you secure your bike – read our guide on how to secure your bike
Only available from Amazon – £56.73 (used available only)
Tech Specs:
The Bordo Big 6000 is more than one metre long when unfolded, making it easy to secure both your frame and wheel to even a thick bike rack post.
It folds down to a compact size and even comes with a bracket to mount to your bike frame.
But will it keep your bike safe from thieves? Sign up to Which? to see if it held up against our tough security tests.
Find out more from Abus.
Tech Specs:
Weighing just under 800g, the Abus Granit Plus 640 is one of the lightest bike locks we've tested. Combined with its small size, this could make it an appealing choice for the cyclist who wants an easy-to-transport U-lock – though there's no bike mount included.
But does its petite size come at the expense of security? Sign up to Which? to find out how well it stood up against our expert lock-breakers.
Cheapest price: £40.49 from Triton Cycles. Also available from Fawkes Cycles and Tredz.
Tech Specs:
The Axa Newton Pro 190 is a full-sized, mid-weight U-lock, and it comes with a bike mount for ease of transport when cycling. But what really matters is whether it will protect your bike against a determined thief.
Find out if our expert lock-breakers managed to crack it – sign up to Which? to see our lab test results.
Cheapest price: £74.67 from Amazon. Also available from Hiplok, and Wiggle.
Tech Specs:
This chain lock weighs in at around 2.4kg, making it one of the heaviest locks we've tested, although its long length means it'll easily fit around your bike frame, rear wheel and whatever you're securing it to.
Does this extra weight provide extra security?
Sign up to Which? to find out if this lock secures your bike against typical tools used by thieves.
Cheapest price: £53.74 from Amazon. Also available from Rutland Cycling.
Tech Specs:
Weighing in at just over 1kg, the Kryptolok 685 is a pretty lightweight lock for its size – 810mm long when unfolded. But does it secure your bike effectively?
Sign up to Which? to find out if this is the bike lock for you.
Cheapest price: £119.99 at Evans Cycles, and Sports Direct. Also available from Amazon.
Tech Specs:
The Kryptonite New York Fahgettaboudit Mini is a small U-lock, though at just over 2kg it's one of the heaviest bike locks we have tested.
The manufacturer rates the security of this bike as 10 out of 10, with a locking cylinder that protects the lock against dirt. But did its security claim hold up when we put the lock through our rigorous lab tests?
Sign up to Which? to find out if this is the bike lock for you.
Cheapest price: £88 from Sports Direct and Evans Cycles.
Tech Specs:
This textile lock can be worn around the waist for ease of transport while cycling. It weighs around 2.4kg, making it one of the heaviest locks we've tested. But does this extra weight provide extra security?
Sign up to Which? to find out if this lock secures your bike against typical tools used by thieves.
Cheapest Price: £28 from Sports Direct, Evans Cycles, and House of Fraser.
Tech Specs:
Weighing in at just under 750g, the U4 Mini is one of the lightest bike locks we have tested. Combined with its small size and the included bike mounting bracket, this makes it extremely easy to transport.
But does it fulfil its main function of securing your bike effectively?
Sign up to Which? to find out if this is the bike lock for you.
Looking to kit out a new bike with a full suite of accessories? If you're planning on cycling after dark, check our guide on the best bike lights
Security experts recommend using two different types of lock to secure your bike, one of which should be a U-lock, according to the Met Police. Different lock types need different tools to break, so using more than one lock type is likely to slow a thief down.
This lock gets its name from its rigid, 'U-shaped' body. U-locks vary in size, strength and weight, but are generally regarded as the most secure type of lock.
For this security there is sacrifice in flexibility. You need to be able to fit the rigid lock around your bike's frame and wheel plus the object you're securing your bike to, so check before you buy that it's the right size for your bike.
Chain locks are made up of a series of hardened steel links, usually inside a protective sleeve. They can offer similar levels of security as U-locks, but they have pros and cons by comparison.
They're more flexible than U-locks so are easier to wrap around tight areas of a bike and secure it to a wider range of objects. But they tend to be heavier than similarly secure U-locks and are more likely to rattle if attached to your bike frame while cycling.
Folding locks consist of several solid steel arms, joined together by steel rivets. They fold up into a compact size, making them easy to transport in a bag or on the bike frame, but open up to a larger area than many other locks. This can make them a good choice if you have a large bike or need to secure it to thick objects.
However, the multiple hinge points on a folding lock are potential weak spots that can be easier for a thief to break. Our tests aggressively attack the hinge points, though, so you can be sure a high-scoring folding lock still offers great security.
Textile locks are made up of tough composite textiles, usually around a metal core. They offer security along with flexibility at a lower weight.
Some are designed to be worn around the waist like a belt when not in use, making them easy to transport while cycling.
This security and flexibility come at a cost – other types of lock will give a similar level of security for less.
Made from intertwined metal fibers with a plastic coating, cable locks come in a wide variety of sizes, weights and locking mechanisms. They're flexible and tend to be available in longer lengths than chain locks.
Their flexibility and light weight come at the cost of being the least secure type of bike lock. They may deter an opportunist, but a persistent bike thief will get through one relatively easily.
As such you shouldn't rely on a cable lock as your main bike lock, but you could consider one as a secondary lock, as a cheaper extra layer of defence for a wheel, for example.
Deciding on the other type of bike lock to purchase generally comes down to your own preferences, but there are some features worth looking out for across all types of bike lock, as they make it harder for skilled thieves to beat it.
For maximum convenience, combination locks usually trump key locks, as you don't need to remember to bring the key. You will, however, need to remember the code – not necessarily that easy if you don't use your bike that often.
Combination locks are often regarded as less secure, however, because:
It would take a determined thief less than an hour to work through all of the unique combinations on a three-digit lock – far from impossible if your bike is tucked away in a quiet location. We recommend opting for a lock with at least four digits, which increases the number of possible combinations, and the time it would take to try them all, tenfold.
In practice, a decent combination lock with at least four dials and built-in anti-lock-picking features will offer similar levels of protection to a decent key lock.
An example of an anti-lock-picking feature is 'false gates'. These make it 'feel' to a thief like they have found the right combination, but doesn't allow the lock to open. It will take a thief much longer to beat a false-gated lock.
Bike locks prices range from around £5 for a basic cable lock, to more than £100 for a big-brand U-lock.
The cheapest bike locks are usually cable locks. While these are better than no lock at all, most thieves will be able to make short work of them. You shouldn't rely on a cheap cable lock as your main lock.
The bike locks we've tested range in price from £30 to £120, including a Best Buy for less than £60. While in general the more expensive the lock, the more secure it will be, you don't have to pay a fortune either.
The short answer is no: no lock is unbreakable.
The aim of bike locks is to make your bike as unappealing as possible, deterring thieves from even trying to nick your bike. You should use two locks to secure your bike, with one of them being a U-lock.
Our tests have found that the best bike locks, while not unbreakable, will stand up to angle grinders, saws and bolt cutters for several minutes. This will stop an opportunist successfully breaking the lock, and make it more likely a professional will give up or be interrupted when trying to break the lock.
Bike lock manufacturers typically grade the security of their locks on a scale of one to 10. This can be useful when comparing the different locks within a single brand.
However, different manufacturers use different scales, as well as different criteria to measure their locks' security. This means it's not possible to use manufacturer ratings to directly compare the security of locks across brands.
Our bike lock reviews are based on assessments and criteria that are comparable across all of the locks we test, so you can feel confident that the locks that score the highest are genuinely the best.
If you're interested in a bike lock we haven't yet reviewed, check its security rating by an independent body such as Sold Secure.
Sold Secure is a third-party certification body that rates locks. Many insurance companies recognise its safety ratings, so getting (and using) a lock with this certification may help lower the cost of bike insurance.
There are four Sold Secure ratings; the higher the rating, the more secure the lock – though you're likely to also find that, in general, the highest-rated locks are the most expensive.
We test every bike lock based on criteria stipulated in a British Standard: for the geeks among you, it's BS EN 15496:2008 Cycles. Requirements and test methods for cycle locks.
What this means in practice is that we throw everything including the kitchen sink into testing a lock's security, as well as assessing how easy to use and how durable it is.
We test each lock's resistance to being cut, pulled apart and hit by machines under strict lab conditions. This ensures that each lock's strength has been tested in the exact same way, giving an objective measure of how tough each lock is.
Locks that pass all these tests are really tough locks, meaning they will stop an opportunist and slow down a professional thief – to the point where they are likely to be interrupted or give up trying to beat the lock.
We then test each bike lock in a real-world situation. A bike is secured with the bike lock and we give an expert lock breaker three minutes to beat the lock using selection of tools that a professional thief might have access to.
The specific tools we use are targeted around each type of lock, but include bolt cutters, nippers, saws and lock picks – even a battery powered angle grinder, our toughest tool.
If our experts can't break the lock in this time, or if the locks last at least a couple of minutes against the angle grinder, you can feel pretty confident that the lock will protect your bike from thieves.
We access the lock for how easy it is to use and transport, including:
Each test we perform factors into the final score for each bike lock. To be a Best Buy a lock needs to score at least 80%, meaning it provides a great level of security against lots of different attacks, while still being easy to use. The overall score is:
Planning to get on your bike more and boost your fitness? Keep track of your progress with a best fitness trackers
Tables last updated 7 September 2022