Ultimate Guide to Bicycle Security

For lots of people, bikes are more than a mode of transport - it's an investment, a passion and for some, a daily necessity. Unfortunately, bicycles are frequently stolen across the UK; thieves look for easy, low-risk targets. If your bike looks well-protected, it's likely they will move on. This is why investing in robust bike security measures is essential.

When choosing a lock or security device look for the SoldSecure rating. This independent testing scheme certifies products by their resistance to theft attempts, with Bronze, Silver, Gold, and Diamond levels. For higher-value bicycles, Diamond-rated locks are strongly recommended. If you have a bicycle insurance policy, you will be required to have a specific rating of lock that corresponds to the value of your bike to ensure your policy is valid.

Locks and deterrent are vital but bicycle insurance adds another layer of protection. At Eversure, our policies can cover accidental damage, third-party liability and accessories like lights and helmets, alongside theft.

Mechanical Security Devices

The most important step to ensuring your bike's security is to always lock your bike whenever you leave it unattended. There are lots of different ways you can do this and the following devices are the foundation of securing your bicycle.

D-Locks (U-Locks)

A D-lock uses hardened steel to secure your bike frame and wheel to an immovable object such as a lamppost or ground anchor.

When choosing a D-lock, choose the smallest one that will fit as the less space inside the shackle makes it harder for theieves to insert tools.

The lock should go through the frame and also around the rear wheel if possible.

Chain Locks

Heavy-duty chain locks are versatile and especially useful at home or in high-risk urban areas. They allow you to secure multiple parts of your bike at once, including both wheels and accessories.

When it comes to chain locks you should look for case-hardened steel links that are a minimum of 12 mm thick as these should resist bolt cutters.

Chain locks can be used with a high quality closed-shackle padlock.

The downside of a chain lock is that they are heavy. This is why lots of people use them for home or workplace storage rather than carrying them around daily.

Folding Locks

Folding locks are a good middle ground that offer a compromise between portability and strength. They’re lighter and more compact than chains but are stronger than cable locks.

These are best for short stops or medium-risk areas. They mount on bike framers with a holster.

For peace of mind, ensure that the folding lock is rated Sold Secure Silver or above.

Cable Locks

Lightweight cable locks are convenient but shouldn't be used as your main lock, only to supplement another lock.

Additional Protective Measures

Locking Wheel Nuts and Skewers

Although quick-release wheels are convenient, they can make your bike a quick target. To improve your bicycle security, consider replacing them with locking skewers or nuts which require a unique key to remove.

Ground Anchors and Wheel Brackets

At home, especially in garages, sheds, or outdoor storage, securing your bike to a permanent ground anchor or wall bracket with a heavy-duty chain dramatically increases protection.

Alarms for Bicycles

Bicycle alarms range from seat post-mounted devices to integrated lock alarms. These detect tampering or movement and emit a loud siren, drawing attention and deterring thieves with some models even able to send notifications to your phone.

GPS Tracking Systems

A growing number of riders install GPS trackers, such as an Apple Tag, hidden inside seat tubes, handlebars, or bottom brackets. These allow you to monitor your bike’s location in real time. Some advanced tracking systems use motion detection to alert you if your bike is moved without authorisation.

Security Marking and Registration

Registering your bike with schemes such as BikeRegister adds a police-traceable identity to your frame. Markings and stickers act as a visible deterrent and increase the chances of recovery if stolen.

Storing Your Bicycle

At Home

• Always lock your bike inside your garage, shed, or home, even if you think it’s safe.


• If you're storing your bike in an outbuilding, fit security lighting, alarms, and cameras.


• Use a ground anchor with a heavy chain as thieves target garages just as much as the bike racks on the street.


• Cover your bike indoors or use a tarpaulin outdoors to make it less visible.

At Work or in a Public Place

• Lock your bike in busy, well-lit areas covered by CCTV.


• Use two different types of lock together for extra security such as a D-lock and a chain together.


• Position locks off the ground to prevent leverage attacks.

For more information, read our guide to bicycle storage solutions.

What To Do If Your Bike is Stolen

1. Report the theft immediately to the police, including your frame number, BikeRegister ID and any distinguishing features.


2. Inform us, your insurance provider, to being the claims process - you will need your crime reference number.


3. Check online marketplaces as stolen bikes will often resurface as on sale.

Bicycle Insurance

Even with the best locks, security devices and practice, no bike is ever 100% theft proof which is why bicycle insurance is so important. Eversure bike insurance policies will give you peace of mind that if your cycle is stolen or damaged, you won't be left out of pocket needing to cover the full cost of repair or replacement.

Final Thoughts

Unfortunately bike theft is common. However with the right security measures, you can make your bike a far less appealing target. High-quality locks, careful storage, alarms, trackers and insurance combined offer the best protection.