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Leaving your bike at the mercy of thieves can be a nerve-racking prospect, but will spending more actually keep your bike any safer? To find out, we rounded up a whole selection of bike locks from £30 all the way up to £290 to see if a premium lock is likely to put off even the most enthusiastic thief (or colleague Dave, for the purposes of this video and feature).

2025 Bike locks testing broken locks lead image
2025 Bike locks testing broken locks lead image (Image Credit: Farrelly Atkinson)

There’s a bewildering number of bike locks out there, all of them promising to keep your bike safe and secure – but where should you be spending your money, and perhaps more importantly, how much do you need to spend to be confident that your bike will remain where you parked it? To make that decision easier, we’ve recently put a whole load of locks to the test to help you choose the best one for you.

Bicycle insurance: compare quotes and find yourself a great deal to get your bike covered

We deploy a similar model for the road.cc bike lights Beam Comparison Engine, in that we’ve assembled a diverse range of locks and tested them at road.cc HQ before sending a duplicate lock out to be reviewed individually by another member of our reviews team.

 

2025 Bike locks testing angle grinder test time
2025 Bike locks testing angle grinder test time (Image Credit: Farrelly Atkinson)

We’ve tested them back-to-back to determine their security credentials, and our reviewers will then take these results into account and also look at other non-security factors that might influence your lock-buying decision, such as ease of use, portability, weight, price, and so on.

2025 Bike locks testing angle grinder close up
2025 Bike locks testing angle grinder close up (Image Credit: Farrelly Atkinson)

Each lock featured here will be getting a full review, so look out for them on the road.cc website over the next few weeks. In the meantime, here’s how they stacked up in the security test…

How we tested the locks

2025 Bike locks testing angle grinder action
2025 Bike locks testing angle grinder action (Image Credit: Farrelly Atkinson)
2025 Bike locks testing angle grinder action
2025 Bike locks testing angle grinder action (Image Credit: Farrelly Atkinson)

We won’t go into massive depth on the methods we used to test the locks – we don’t want to publish an online manual for would-be bike thieves, but we wanted to put them through a realistic attack from a thief, similar to what they’d (hopefully not) have to withstand in the real world.

We settled on a two-part assessment consisting of a 60cm bolt cropper attack, followed by some time to get acquainted with a cordless angle grinder if they survived the bolt cropper.

2025 Bike locks testing dodgy Dave
2025 Bike locks testing dodgy Dave (Image Credit: Farrelly Atkinson)

We used the same designated ‘thief’ throughout for consistency, and allowed him to go at the locks any way he felt fit, just like a thief would in the real world. We’re well aware that all locks can be cut through eventually, and a true security expert might be able to achieve this faster than our thief – but in reality, the vast majority of bike thieves are not highly skilled.

Test one: bolt cutters

2025 Bike locks testing bolt cutters changing blades
2025 Bike locks testing bolt cutters changing blades (Image Credit: Farrelly Atkinson)

First, we set Dodgy Dave to work with bolt cutters: a readily available model from one of the big brands, nothing specialist or unusual. We used 600mm bolt cutters that a thief could conceal in a large coat and carry about relatively easily.

We used new bolt cutter jaws for each lock, and gave our thief up to a minute to try to cut through each lock, recording the time of its resistance.

2025 Bike locks testing broken locks Hiplock Switch wearable lock
2025 Bike locks testing broken locks Hiplock Switch wearable lock (Image Credit: Farrelly Atkinson)

Some locks were too wide to fit into the jaws of our bolt cutters. Where this was the case, we couldn’t used this method of attack and moved straight on to our second test…

Test two: angle grinder

2025 Bike locks testing angle grinder
2025 Bike locks testing angle grinder (Image Credit: Farrelly Atkinson)

If the lock made it through the bolt cutter test in one piece, we moved onto our angle grinder test.

Again, we used an easily obtainable model from one of the big brands. It’s also cordless, because thieves don’t tend to go around with super-long extension leads.

We used the same angle grinder throughout, recharging the battery fully and replacing the cutting disc between attempts for consistency, and gave Dodgy Dave a maximum of two minutes to attack each lock, recording the amount of time it resisted.

2025 Bike locks testing angle grinder action
2025 Bike locks testing angle grinder action (Image Credit: Farrelly Atkinson)
2025 Bike locks testing angle grinder action
2025 Bike locks testing angle grinder action (Image Credit: Farrelly Atkinson)

With some D-locks, you can cut through one side of the shackle with the angle grinder and then twist the whole thing away to remove the bike. Others hold fairly firm even when one side of the shackle is cut through. For this reason, we didn’t time how long it took us to cut through the shackle. The time given below is how long it took us to remove the bike from our stand.

D-locks with cables: where we had a D-lock with a cable, our times listed below relate to getting through the D-lock section. We’ve put the results of attacking the cable in the ‘Notes’ section at the bottom of each entry.

What we didn’t do, and why…

2025 Bike locks testing Halfords bike lock on bike
2025 Bike locks testing Halfords bike lock on bike (Image Credit: Farrelly Atkinson)

We could have taken our locks to the lab and tested them with specialist equipment. We were tempted to do that to ensure complete consistency, but we decided on real-world testing for greater realism. We wanted to know whether each lock would stand up to the most common methods of attack out in the wild, and there’s none wilder than an attack from Dodgy Dave.

We’re not saying that any lock would put up exactly the same level of resistance to every thief; different people might use different equipment and/or different methods of attack. What we are saying is that this is how each lock performed in our tests outlined above.

2025 Bike locks testing bolt cutters on chain
2025 Bike locks testing bolt cutters on chain (Image Credit: Farrelly Atkinson)

One thing we’re not testing here is lock picking. As much as we enjoy watching the LockPickingLawyer’s videos and have huge respect for his expertise, it would be extraordinarily rare for a street thief to possess similar skills. It’s almost unheard of for bikes to be stolen in this way according to numerous police forces we’ve spoken to about bike theft, so the pick-proofness of our locks is not something we’ll be assessing. 

You may have heard of various other methods of breaching bike locks. We won’t go into detail because, as mentioned, we don’t want to give people ideas – but we’ve focused our efforts on testing against the most common forms of attack.


Bike lock test results

Locks testing 2025 results part 1
Locks testing 2025 results part 1 (Image Credit: Farrelly Atkinson)

As you’ll see, there’s a sizeable difference in how the locks withstood our attacks, but no one would expect locks of such diverse prices to perform at the same level. Only one lock failed the first test – the Masterlock Chain – succumbing to Dodgy Dave and his bolt croppers.

2025 Bike locks testing used angle grinder discs
2025 Bike locks testing used angle grinder discs (Image Credit: Farrelly Atkinson)

You’ll also notice that some of the most expensive locks survived our attack with the angle grinder. We’re not saying that any lock that survived our testing is necessarily ‘angle grinder-proof’. With enough time and equipment, a thief could get through just about anything. We’re just saying that this is how the various locks performed in our test scenario.

Which locks impressed us the most?

2025 locks testing overall scores
2025 locks testing overall scores (Image Credit: Farrelly Atkinson)

After a lot of discussion, we agreed that it was the Halfords Advanced 23cm D lock and the more expensive locks that had impressed us most, but we wanted a way to quantify this in a way that took other important factors into account, while being as objective as possible. We devised an overall scoring system which factors in the price of the lock, the weight of the lock and its performance in our angle grinder test. We’ve then scaled this result to give scores out of 100. 

Please note that this score is weighted towards what we feel is important from a lock, and so the best lock for you may differ. For example, if it’s for your garage then you might not care about how much your lock weighs.

A lock-by-lock account

Halfords 23cm D Lock – Key

Buy from Halfords for £30.00

2025 Bike locks testing Halfords 23cm D lock
2025 Bike locks testing Halfords 23cm D lock (Image Credit: Farrelly Atkinson)

Bolt cutters: Survived
Angle grinder: 33 secs

Overall score: 62
Notes: At just £30 the Halfords 23cm D Lock was the cheapest in the test, but it wasn’t the worst. It’s light, it’s cheap, and it withstood the angle grinder for 33 seconds, giving it an overall score of 62/100.

Master Lock Chain with Mini U-Lock 10mm x 90cm

Buy from Tredz for £32.99

2025 Bike locks testing Masterlock Chain
2025 Bike locks testing Masterlock Chain (Image Credit: Farrelly Atkinson)

Bolt cutters: 41secs
Angle grinder: N/A

Overall score: 29
Notes: The Masterlock Chain gets the lowest of our scores because despite being cheap, it is heavy and was defeated by the bolt croppers, meaning that it didn’t move on to stage 2 of our testing.

Squire Matterhorn compact security cable pack

Buy from Squire for £49.99

2025 Bike locks testing Squire Matterhorn compact security cable pack
2025 Bike locks testing Squire Matterhorn compact security cable pack (Image Credit: Farrelly Atkinson)

Bolt cutters: Survived
Angle grinder 58 secs (to get through the D-lock section)

Overall score: 64
Notes: It took us 55secs to get through the cable with bolt croppers. We cut through one side of the D-lock allowing us to force the lock over the frame tube and remove the bike.

Master Lock U-Lock 10 x 21cm

Buy from Bikeparts for £40.06

2025 bike locks testing Masterlock U-Lock
2025 bike locks testing Masterlock U-Lock (Image Credit: Farrelly Atkinson)

Bolt cutters: Survived
Angle grinder: 42 secs

Overall score: 62

Notes: We cut through one side of the shackle. It’s impressively light.

Halfords Advanced 23cm D lock

Buy from Halfords for £50.00

2025 Bike locks testing Halfords Advanced 23cm D-Lock
2025 Bike locks testing Halfords Advanced 23cm D-Lock (Image Credit: Farrelly Atkinson)

Bolt cutters:  Survived
Angle grinder: 1:34 mins

Overall Score: 77
Notes: This was the longest time that it took us to get through any lock priced less than £149.99 – so you’re getting a lot of security for your money. We cut through one side of the lock with the angle grinder in about 50 seconds, but we couldn’t twist the lock out of position due to its tight tolerances, so had to cut the other side too in order to remove it. 

Oxford Shackle14 Pro Duo U-Lock 320mm x 177mm + cable

Buy from Winstanleys Bikes for £42.74

2025 Bike locks testing Oxford Shackle14 Pro Duo
2025 Bike locks testing Oxford Shackle14 Pro Duo (Image Credit: Farrelly Atkinson)

Bolt cutters: Survived
Angle grinder: 25 secs

Overall Score: 45
Notes: The cable was defeated in 53 seconds by the bolt croppers but the D-lock survived. However, the D-lock didn’t put up much resistance to the angle grinder – we cut one side of shackle in just 25 seconds.

Squire Matterhorn Security Cable pack

Buy from Lockshop Warehouse for £49.20

2025 Bike locks testing Squire Matterhorn Security cable pack
2025 Bike locks testing Squire Matterhorn Security cable pack (Image Credit: Farrelly Atkinson)

Bolt cutters: Survived
Angle grinder: 59 secs

Overall Score: 59
Notes: It took 60secs to get through the cable. With one side of the shackle cut it was not possible to remove the bike, so the other side needed cutting too.

Hiplok Original

Buy from Cyclestore for £67.49

2025 Bike locks testing Hiplock Original
2025 Bike locks testing Hiplock Original (Image Credit: Farrelly Atkinson)

Bolt cutters: Survived
Angle grinder: 31secs

Overall Score: 47
Notes: Dave decided to attack the chain rather than the shackle with the angle grinder. Both sides of the link needed cutting, but this was done in 31 seconds. The overall score has been brought down by a relatively high weight, but this lock is wearable so that might matter less to you.

Hiplok Switch

Buy from Tredz for £64.99

2025 Bike locks testing Hiplock Switch
2025 Bike locks testing Hiplock Switch (Image Credit: Farrelly Atkinson)

Bolt cutters: Survived
Angle grinder: 22secs

Overall Score: 55
Notes: The Hiplock Switch, like all the folding locks, needed just one cut to remove the bike. It’s score has been brought up by its low weight, and it scored the highest of the folding locks.

Kryptonite Evolution 790 Folding Lock

Buy from Decathlon for £108.16

2025 Bike locks testing Kryptonite Evolution 790 Folding lock
2025 Bike locks testing Kryptonite Evolution 790 Folding lock (Image Credit: Farrelly Atkinson)

Bolt cutters: Survived
Angle grinder: 23 seconds

Overall Score: 45
Notes: Again, just one cut needed to be made. It lasted a very similar time in the angle grinder test to the Hiplock Switch.

Abus Bordo 6200K

Buy from Halfords for £115.00

2025 Bike locks testing ABUS Bordo 6200K
2025 Bike locks testing ABUS Bordo 6200K (Image Credit: Farrelly Atkinson)

Bolt cutters Survived
Angle grinder 13secs

Overall Score: 44
Notes: It’s light and easy to carry, but was no match for our angle grinder.

Litelok Core Plus

Buy from Litelok for £139.99

2025 Bike locks testing Hiplock Switch
2025 Bike locks testing Hiplock Switch (Image Credit: Farrelly Atkinson)

Bolt cutters: Survived
Angle grinder: 49secs

Overall Score: 51
Notes: The Litelok Core Plus put up a good fight against the angle grinder, lasting 49 seconds. This is one of only two wearable locks that we tested.

Litelok X1

Buy from Litelok for £149.99

2025 Bike locks testing Litelok X1
2025 Bike locks testing Litelok X1 (Image Credit: Farrelly Atkinson)

Bolt cutters: Survived
Angle grinder: Survived

Overall Score: 100
Notes: The first – and least expensive – lock to survive our angle grinder test. We certainly made a dent in the lock, but after 1:25 mins the cutting disc was worn out. We were unable to change the cutting disc within the two minute allocated time frame. 

Onguard RockSolid 8590

Buy from Tredz for £199.99

2025 Bike locks testing Onguard Rocksolid 8590
2025 Bike locks testing Onguard Rocksolid 8590 (Image Credit: Farrelly Atkinson)

Bolt cutters: Survived
Angle grinder: Survived

Overall Score: 100
Notes: The lock destroyed our angle grinder disc in 30 seconds. Very impressive, especially given the price. We made minimal impact on the metal in that time.

Litelok X3

Buy from Litelok for £249.99

2025 Bike locks testing Litelok X3
2025 Bike locks testing Litelok X3 (Image Credit: Farrelly Atkinson)

Bolt cutters: Survived
Angle grinder: Survived

Overall Score: 85
Notes: Another impressive lock from Litelok. It didn’t destroy the angle grinder disc to the same degree as some, but wasn’t far off. The angle grinder got through the rubber coating, of course, but we didn’t get through much of the metal in the time allocated. Despite still scoring full marks in the angle grinder test, it’s overall score is less than the locks above due to higher price and weight.

Hiplok D1000

Buy from Helmet City for £224.99

2025 Bike locks testing Hiplock D1000
2025 Bike locks testing Hiplock D1000 (Image Credit: Farrelly Atkinson)

Bolt cutters: Survived
Angle grinder: Survived

Overall Score: 88
Notes: Disc died after 1:15mins of attacking this lock. We were beginning to make an impact… but nowhere near enough. It would have taken us a lot longer to eventually get through it. 

Kryptonite New York Diamond

Buy from Halfords for £269.99

2025 Bike locks testing Kryptonite New York Lock
2025 Bike locks testing Kryptonite New York Lock (Image Credit: Farrelly Atkinson)

Bolt cutters: Survived
Angle grinder: Survived

Overall Score: 81
Notes: A lock with a reputation for being secure, and it didn’t disappoint. The New York Lock destroyed our angle grinder disc in 34secs. Very impressive, but it is quite weighty.

Abus Granit Super Extreme 2500

Buy from Halfords for £234.99

2025 Bike locks testing ABUS Granit Super Extreme 2500
2025 Bike locks testing ABUS Granit Super Extreme 2500 (Image Credit: Farrelly Atkinson)

Bolt cutters: Survived
Angle grinder: Survived

Overall Score: 82
Notes: This lock didn’t quite destroy the angle grinder disc, but we didn’t make much of an impact on the internal metal structure. It stood up to our attack well.

Squire Stronghold D16 Max

Buy from Biketart for £289.99

2025 Bike locks testing Squire Stronghold D16 Max
2025 Bike locks testing Squire Stronghold D16 Max (Image Credit: Farrelly Atkinson)

Bolt cutters: Survived
Angle grinder: Survived

Overall Score: 74
Notes: The most expensive lock on test lasted the whole two minutes. Our angle grinder disc survived it, but we didn’t get through a lot of metal.

So… how much should you spend on a bike lock?

2025 Bike locks testing broken D lock
2025 Bike locks testing broken D lock (Image Credit: Farrelly Atkinson)

To answer the question in the title: yes, spending more on a bike lock usually means more security for your bike. How much you spend obviously depends on budget, and other factors such as where you usually park your bike. Kryptonite and other brands suggest that you spend 10% of the total cost of your bike on security, but there is no hard and fast rule.

To start with, most UK bike insurers require the use of a Sold Secure-approved lock, and often specify a level depending on your bike’s value. Failing to use a lock of the required rating could invalidate any insurance claim if your bike is stolen, so make sure you read the small print and get this one right.

2025 Bike locks testing broken locks 2
2025 Bike locks testing broken locks 2 (Image Credit: Farrelly Atkinson)

Why wouldn’t you just buy a lock with the highest security rating, then? First, a higher level of security tends to cost you more money (although there are exceptions to that rule).

Second, the most secure locks aren’t always the lightest. If you’re after a lock to stop someone walking off with your bike while your back is turned at your mid-ride coffee stop on a Sunday morning, chances are that you’ll want something lightweight and easy to carry, not a 2kg lump of angle grinder-beating tech. 

2025 Bike locks testing Krytptonite New York Lock 2
2025 Bike locks testing Krytptonite New York Lock 2 (Image Credit: Farrelly Atkinson)

On the other hand, if you’re locking your bike overnight in a garage, weight is unlikely to come into it. You just want the highest level of security. In most other situations, you’ll be balancing security against weight, price, ease of use, and so on.

From our testing, it’s the Halfords Advanced 23cm D lock, Litelok X1 and Onguard Rocksolid 8590 that stand out as the best taking into account weight, price and security – but as we’ve said already, the best lock for you may differ. We tested plenty of impressive locks that might tick your boxes better, and the full reviews that we’ll be publishing in the coming week will likely give a fuller picture of what they all offer. The size and shape of the lock, whether you can mount them to your frame/panniers or not, even how quick and easy it is to lock and unlock them may all matter to you. 

2025 Bike locks testing broken locks Onguard lock post test
2025 Bike locks testing broken locks Onguard lock post test (Image Credit: Farrelly Atkinson)

It’s easy for us to say, but we’d suggest that if you’re looking to save money, you bike lock isn’t the place to do it. Seriously! Having your bike stolen is really, really bad news. If you’re tempted to buy a lock based purely on price, consider how you’ll feel if you come back to find your bike gone.

Is there an unbreakable bike lock? Nope, but some are significantly harder to break than others. The more resistant your lock is to attack, the more likely any potential thief is to give up and go elsewhere.

2025 Bike locks testing broken locks
2025 Bike locks testing broken locks (Image Credit: Farrelly Atkinson)

After seeing this test, which lock would you choose to lock up your pride and joy? Let us know in the comments below as well as if we’ve missed your favourite lock…