Choosing an insurance approved bike lock that satisfies your policy is the step most cyclists get wrong - they buy a lock they like, then discover the certification does not match what the policy requires. The bike lock certifications guide covers the full ratings landscape; this article focuses on how insurers use those certifications, which rating your policy is likely to name, and how to verify compliance before a claim depends on it. Research from the University of California, Davis found that 59% of stolen bicycles were locked at the time of theft,2 most secured with hardware that would not meet current insurer standards. This guide explains why, and what to do about it.
Quick Answer
Which lock rating does your insurer require?
Most major UK bicycle insurers now require Sold Secure Gold as the minimum. Bikmo - the insurer behind British Cycling and Cycling UK member policies - updated its requirement to Sold Secure Gold or Diamond for all policies issued from July 2025, regardless of bike value.8 Laka also requires Gold as a flat minimum. Yellow Jersey and ETA apply a sliding scale: Silver for bikes under £1,500, Gold for bikes above it. In the Netherlands, ART certification is mandatory across all bicycle insurance policies, with the required star level set by the insurer based on assessed theft risk.7
Key Takeaways
- Most major UK bicycle insurers require Sold Secure Gold as the minimum; from July 2025, Bikmo requires Gold or Diamond for every policy it issues, regardless of bike value.8
- A lock's certification level must match your policy's stated requirement; physical appearance and marketing claims do not substitute for an entry on the official Sold Secure or ART database at the required tier.
- ART certification (mandatory for all bicycle insurance in the Netherlands since 1982) and Sold Secure are separate independent schemes; most UK policies specify Sold Secure by name.
- 59% of bikes stolen in one peer-reviewed study were locked at the time of theft,2 most with hardware below the Gold standard - confirming that owning a lock and owning a compliant lock are two different things.
What "Insurance-Approved" Actually Means
An insurance-approved bike lock is one that has been independently tested and certified by a body your insurer recognises and names in its policy conditions. The term "approved" does not refer to a single global standard. It refers to whichever certification scheme appears in your policy wording: usually Sold Secure in the UK, ART in the Netherlands, or FUB in France. A lock can be genuinely well-engineered and physically strong - but if it does not appear on the official database of the named scheme at the required tier, your insurer can treat the security condition as unmet and decline the claim.
What the term means in contractual terms
The standard named in your policy is what matters legally, not the lock's physical performance in isolation. If your policy says "Sold Secure Gold," the insurer checks whether the specific model you used holds Sold Secure Gold certification on the official product list at soldsecure.com. A lock marketed as "equivalent to Gold" or "military grade" without the certification does not satisfy the condition. This distinction exists because independent testing bodies use controlled, repeatable attack-tool sequences that allow insurers to benchmark risk consistently. It is that controlled, documented result - not a manufacturer's description - that the insurer is contractually relying on when setting the condition.
There is also a practical documentation reason: when you file a claim, you will typically need to describe how the bike was locked, where it was locked, and which lock was used. Some insurers ask for a photo of the lock or its remains. Demonstrating that a certified lock was used forms part of showing that the policy condition was satisfied in good faith. For a full comparison of each scheme's test methodology, see bike lock security ratings explained.
Why insurers created certification requirements in the first place
Insurers price and underwrite bicycle policies based on measurable, comparable risk inputs. An uncertified lock introduces a variable they cannot consistently price or verify. Certification schemes solve that problem. Sold Secure was established in 1992 by Northumbria and Essex Police, with Home Office backing, specifically to give insurers and consumers a reliable, independently tested signal about a lock's attack resistance.6 The ART Foundation originated in the Netherlands in 1982 as a joint project of the RAI Association, ANWB, and insurance companies directly.7 In both cases, the certification scheme exists partly because insurers demanded a consistent, verifiable standard - which is why insurer acceptance of these schemes is close to universal in their home markets.
The practical consequence for cyclists is straightforward: a lock without the named certification is, from the insurer's perspective, an unknown. Some policies exclude uncertified locks entirely; others may pay a reduced settlement if the lock used was below the stated minimum. Either outcome is worse than buying the right lock from the start.
"If your lock doesn't carry a Sold Secure rating, we're unable to provide coverage for your bike."
Yellow Jersey Insurance, UK bicycle specialist insurer9
"You must use a Sold Secure lock with a rating of either Silver or Gold, depending on the value of the bicycle."
ETA Bicycle Insurance, UK ethical transport insurer10
How the Major Rating Systems Work
Three independent certification bodies dominate bicycle lock ratings across Europe: Sold Secure (UK, founded 1992), ART Foundation (Netherlands, founded 1982), and FUB (France). Each tests locks against a defined attack-tool sequence, with higher tiers requiring resistance to progressively more powerful tools for a minimum duration. Passing a tier means the lock withstood those tools under test conditions; failing means it did not - and locks that fail are simply not listed in the certified product database.
Sold Secure's four-tier scale: Bronze, Silver, Gold, and Diamond
Sold Secure is now owned and administered by the Master Locksmiths Association, operating from purpose-built test laboratories in Rugby, Warwickshire.6 Its four tiers escalate by attack-tool category:
- Bronze: basic tool list; tests resistance to opportunistic theft using common items available to any passer-by.
- Silver: enhanced tool list; tests resistance to more determined attackers using heavier implements such as heavier bolt croppers and pry bars.
- Gold: dedicated tool list including bolt croppers, crowbars, and TCT hacksaws. A Gold-rated lock must withstand these tools for the test duration. Gold is the standard most UK bicycle insurers now require as a minimum for standard cycling policies.
- Diamond: specialist dedicated tool list including portable and mains-powered angle grinders. Diamond is the only Sold Secure tier that tests angle grinder resistance and is increasingly required by premium or high-value-bike policies.
The key practical point: Gold is the line most insurers draw. Bronze and Silver are genuine certifications, but they do not satisfy a Gold condition. For a detailed breakdown of what the Gold rating tests and how it compares to Silver in practice, see Sold Secure Gold: what the rating means.
ART certification: the Dutch standard spreading into European policies
The ART Foundation was established in 1982 as a joint project of the RAI Association, ANWB, insurance companies, and the SKG-IKOB testing institute.7 ART tests locks for durability, weather resistance, environmental resistance, and attack resistance across a 1-to-5 star scale. Unlike Sold Secure, ART was designed from the outset in direct collaboration with the insurance industry, which explains why all Dutch bicycle insurers require ART-certified locks - not as a preference but as a condition on every policy. The required star level is set by the insurer based on the bicycle's assessed theft risk, value, and location.7
ART certification is less widely recognised by UK insurers than Sold Secure, but a lock holding both certifications satisfies requirements in both markets. That dual certification is rare for folding locks - most cannot reach it - which is part of why it represents a genuine engineering achievement when it does occur. For a detailed comparison of ART's star levels and how they map to Sold Secure, see ART 3 Star certification for folding locks.
| Feature | Sold Secure | ART Foundation |
|---|---|---|
| Founded | 1992 (Northumbria and Essex Police, Home Office) | 1982 (RAI, ANWB, insurers, SKG-IKOB) |
| Country of origin | United Kingdom | Netherlands |
| Rating scale | Bronze, Silver, Gold, Diamond | 1 star to 5 stars |
| Insurer recognition | UK (standard requirement); some European | Netherlands (mandatory on all policies); select EU |
| Angle grinder testing | Diamond tier only | Higher star tiers |
| Independent of brands | Yes (Master Locksmiths Association) | Yes (non-profit joint scheme) |
| Common insurer minimum | Gold (UK standard) | 2 or 3 star (varies by insurer and risk level) |
Reading the Lock Requirement in Your Policy
Your policy schedule and the full terms and conditions document are where you find the lock requirement. It typically appears under a heading such as "Conditions," "Security Requirements," or "Bicycle Locking Requirements." Most UK policies name Sold Secure specifically, and most now state the tier. If your policy was issued or renewed after July 2025 with Bikmo, it will state Gold or Diamond as a flat requirement regardless of bike value.8 If it predates that update, check whether Bikmo applied the new condition to your renewal automatically.
Where to find the requirement in a UK policy document
Open the policy schedule first - the two- or three-page personalised document sent when your policy started or last renewed. It summarises key conditions including any lock requirement. If the lock requirement is absent from the schedule, open the full policy wording document (typically called a "Policy Booklet" or "Terms and Conditions"). Search for "lock," "security," or "Sold Secure." The requirement will typically read something like: "The bicycle must be locked with a Sold Secure Gold (or above) rated lock secured through the frame to a fixed, immovable object." Read every word: "through the frame" means a cable through a wheel alone would not satisfy the condition even if it carried a Gold rating on the lock body itself.
If the document uses language such as "an approved lock" or "a suitable lock" without naming a certification tier, call your insurer to confirm what they accept. Some older policies were written before Sold Secure tiers became a standard contractual condition and may accept Silver or any Sold Secure certification. Get that confirmation in writing - email is sufficient - before buying a lock based on it.
How UK insurer requirements tier by bike value
The most common current structure is Sold Secure Gold as a flat minimum, regardless of how much the bike is worth. This approach - used by Bikmo and Laka - reduces ambiguity for policyholders and for claims handlers. A smaller number of insurers still apply a value threshold: Silver for lower-value bikes, Gold for higher-value ones. The table below reflects published conditions from six major UK specialist bicycle insurers as of July 2026.
| Insurer | Minimum lock rating | Threshold |
|---|---|---|
| Bikmo | Sold Secure Gold or Diamond | None - flat requirement from July 2025 |
| Laka | Sold Secure Gold | None - flat requirement |
| Yellow Jersey | Silver (bikes under £1,500) / Gold (bikes £1,500 and above) | £1,500 |
| ETA | Silver or Gold depending on bike value | Sliding scale |
| Sundays Insurance | Silver or Gold depending on bike value | Sliding scale |
| Pedal Cover | Tiered by bike value | Sliding scale |
Always verify requirements directly with your insurer before purchase. Policy conditions change, particularly at renewal, and the table above reflects a snapshot rather than a guarantee of current terms.
What happens if your bike value increases after you take out the policy
Upgrading a bike or switching to an e-bike after the policy starts may change your lock requirement mid-term. If you originally insured a £900 commuter and replaced it with a £3,200 e-bike, a Sold Secure Silver lock that satisfied the original condition may no longer satisfy the Gold requirement attached to the higher-value bike. Many insurers require you to notify them of any significant change in insured property value. Review the lock condition at that point, and confirm in writing what minimum certification now applies. The financial scale of bicycle theft makes this worth the effort: US researchers estimated approximately 2.4 million adult bicycles are stolen annually in the United States alone, representing close to $1.4 billion in losses,3 and insurers price and condition their policies with that exposure in mind.
Choosing an Insurance Approved Bike Lock That Meets Your Policy
To choose a certified lock, first confirm which certification name and tier your policy states, then verify that the specific model you plan to buy appears at that tier in the issuing body's official product database. That verification step - checking the live database rather than relying on packaging, marketing, or retailer descriptions - is what turns a well-intentioned purchase into a genuinely compliant one.
How to verify a specific lock's certification status
Sold Secure maintains an official product finder at soldsecure.com where every certified lock appears with its exact tier. Search by lock name or brand; if a model is not listed, it is not Sold Secure certified at any level. ART-certified locks are listed at stichtingart.nl. Run this check before purchase. If the lock you intend to buy is not in the database, buying a different lock that is listed costs less than filing a claim that gets declined because the lock condition was not met.
One shortcut worth noting: Seatylock maps its internal color coding directly and one-to-one to Sold Secure certification levels. A Seatylock product carrying the Gold color badge holds Sold Secure Pedal Cycle Gold certification - not a marketing approximation but the actual certification, verifiable in the Sold Secure database. That mapping removes the ambiguity that often surrounds other brands' internal scales, which use their own numbering rather than aligning to an independent standard.
Can a folding lock reach Sold Secure Gold or ART 3 Star?
Most folding locks on the market do not reach Gold or ART 3 Star. The articulated bar design creates more potential attack points than a solid U-shackle or a chain link, and thicker plate steel is needed to compensate - which means more weight and greater manufacturing complexity. Most folding locks are certified Silver, if at all. However, some do reach Gold and, in rarer cases, dual certification at both Gold and ART 3 Star.
The Foldylock Forever holds Sold Secure Gold and ART 3 Star certification. Those ratings were earned through independent testing that assessed its 6.5mm hardened steel plates and patented anti-tamper rivets against the dedicated attack-tool sequences each scheme specifies. It satisfies the UK Gold minimum required by Bikmo and Laka, and it satisfies the ART mandatory condition required by Dutch bicycle insurers at the 3 Star level simultaneously. For cyclists whose insurer requires Gold as a minimum and who want the portability of a folding lock, that combination removes the trade-off that usually exists between certification level and lock format.
Chain locks and U-locks: options for policy compliance
Chain locks certified at Gold level offer a longer locking circumference than most folding locks, which matters when anchoring to wider structures or when a secondary wheel lock is needed. The Viking Gold 110 is a 110 cm chain lock rated Sold Secure Gold - a length that allows both the frame and rear wheel to be secured to a standard bike rack or street fixture in a single pass, the type of through-the-frame locking most insurer conditions explicitly require. Its neoprene sleeve protects the bike's paint, and the integrated magnetic keyhole shutter keeps debris out of the cylinder - the type of daily-use design that keeps a Gold-rated lock in working condition over years of use.
U-locks work differently: compact, rigid, and well-suited to fixed objects in urban environments where locking circumference is naturally limited by the anchor point. The Mason 180 uses a triangular shackle geometry, which increases torsion resistance compared to a round shackle by reducing the leverage a thief can apply at the bend. Before purchase, confirm the Mason 180's current certification tier on the Sold Secure database and check that it matches the level your policy states - because even within a single product line, different sizes can carry different certification results.
Does using a higher-rated lock reduce your premium?
Some UK specialist bicycle insurers do adjust pricing based on declared lock type and certification level. The mechanism varies: some offer a stated discount for Gold or Diamond rated locks at point of purchase; others use the lock tier as an eligibility filter - they simply will not cover certain high-value bikes below Gold. ETA links its minimum certification requirement directly to the bike's declared value,10 which means a higher-rated lock indirectly expands what ETA will agree to insure at all.
If your insurer does not proactively offer a discount for a higher-tier lock, ask at renewal. Some adjust pricing when presented with documented evidence of a certified lock, on the basis that the claim probability for a Gold or Diamond-rated lock is demonstrably lower than for a Bronze or Silver-rated one. Keep a record of the lock's certification - a screenshot from the Sold Secure database is simple evidence to gather and straightforward to produce if asked.
Frequently Asked Questions
Does home contents insurance cover my bicycle automatically?
Most home contents policies cover bicycles inside the home against accidental damage or theft from the property, but typically exclude theft from public places as standard. To cover a bike locked in a public location, most riders need either a standalone specialist bicycle insurance policy or a contents policy with an extended "away from home" or "personal possessions" add-on. Check your schedule under "all risks" and look specifically for any locking requirement attached to public-theft claims before assuming you are covered.
What does Sold Secure Gold mean in practice?
Sold Secure Gold means an independent test laboratory has attacked the lock using a dedicated tool list that includes bolt croppers, crowbars, and TCT hacksaws, and the lock resisted those tools for the required test duration. It is the most common minimum required by UK bicycle insurers as of 2025. Sold Secure was established in 1992 by police forces and the Home Office specifically to provide insurers with a consistent, attack-tested standard they could reference in policy conditions.6
Is ART certification accepted by UK bicycle insurers?
ART certification is not universally accepted by UK insurers, because most UK policies name Sold Secure specifically rather than ART. A lock that holds both ART 3 Star and Sold Secure Gold satisfies UK Gold requirements through its Sold Secure certification, and satisfies Dutch insurer requirements through the ART mark. If your UK policy does not reference ART, it is the Sold Secure entry on the database that matters for your claim - regardless of whether the lock also holds ART certification.
What happens if my lock does not meet the required standard when my bike is stolen?
If your lock does not meet the certification your policy specifies, the insurer can decline the claim on the grounds that a policy condition was not satisfied. Yellow Jersey is explicit: if a lock does not carry the required Sold Secure rating, the insurer cannot provide coverage for the bike.9 The precise outcome depends on the insurer and on how materially the lock fell short of the stated condition, but declining or reducing the payout is within the insurer's contractual rights when the condition was not met.
Can two Silver-rated locks satisfy a Gold requirement together?
Some UK bicycle insurers allow two Sold Secure Silver locks used together at the same locking point to satisfy a Gold minimum condition. The reasoning is that a thief then faces two independent attack sequences. However, this allowance is not universal: check your specific policy wording for language about "two locks" or "secondary lock," and confirm with your insurer in writing before relying on it. If the policy states Gold with no two-lock alternative mentioned, a single Silver lock or two Silver locks together do not satisfy the condition.
Limitations and Edge Cases
- The insurer requirements in the comparison table reflect conditions published as of July 2026 and change at renewal. Verify directly with your insurer before purchase rather than relying on the table alone.
- ART certification requirements apply within the Dutch insurance market. This article does not cover French FUB certification or Scandinavian Varekakta requirements, which have their own insurer recognition landscapes and star-level mappings.
- Meeting the lock certification condition does not guarantee a claim will succeed if other conditions are not met: most policies also specify that the lock must secure the bicycle frame (not just a wheel) to a fixed, immovable object. Certification is necessary but not the whole requirement.
References
- Bikes.org.uk - UK Bike Theft Statistics 2025, citing ONS Crime in England and Wales (year ending March 2024): 66,960 reported bicycle thefts; 56-71% non-reporting rate from Crime Survey for England and Wales.
- Findings - Cohen, Achituv, Nelson, Fitch-Polse et al., "Patterns in Bike Theft and Recovery," Findings journal, DOI: 10.32866/001c.90056, November 29, 2023. (59% of stolen bikes were locked at time of theft; 35% used cable locks; 26% used U-locks.)
- Findings - Agarwal, Fitch-Polse, Nelson, Herr, "Bicycle Theft in the US: Magnitude and Equity Impacts," Findings journal, DOI: 10.32866/001c.127974, January 16, 2025. (Approximately 2.4 million adult bicycles stolen annually in the US; estimated annual loss close to $1.4 billion.)
- Bike Index - 2025 Bicycle Theft Stats, citing FBI crime data 2023: 127,646 bicycles reported stolen in the United States, representing approximately 3% of all reported larceny thefts.
- IamExpat - "Bicycle thefts in the Netherlands increased 30% last year," December 12, 2024, citing CBS Safety Monitor 2023: 928,000 bicycles stolen in 2023, up 30% from 2021; Dutch insurers paid out EUR 271 million in bicycle theft claims in 2023, nearly double 2021 payouts.
- Sold Secure - About Us: established 1992 by Northumbria and Essex Police with Home Office backing; now owned and administered by the Master Locksmiths Association, operating purpose-built test laboratories in Rugby, Warwickshire.
- ART Foundation - Insurance requirements page: ART established 1982 as a joint project of the RAI Association, ANWB, insurance companies, and SKG-IKOB; all Dutch bicycle insurers require ART-approved locks; required star level set by each insurer based on assessed theft risk.
- Bikmo - Locking Requirements support article: Bikmo requires Sold Secure Gold or Diamond for all policies issued from 1 July 2025 onwards; previously Gold was required only for bikes over £1,500.
- Yellow Jersey Insurance - "Bike Theft Insurance: Does Your Lock Meet the Standard?" - source of verbatim quote: "If your lock doesn't carry a Sold Secure rating, we're unable to provide coverage for your bike."
- ETA Bicycle Insurance - Lock Requirements page - source of verbatim quote: "You must use a Sold Secure lock with a rating of either Silver or Gold, depending on the value of the bicycle."
Conclusion
The right insurance-approved bike lock starts with your policy document, not a product page. Confirm which certification name and tier your insurer requires, verify that the specific model you buy appears at that tier on the official Sold Secure or ART database, and keep the lock - or its remains - if a theft occurs. That combination of documented compliance and physical evidence supports a clean claim. The certification is not a formality; it is the verifiable proof that the security condition you agreed to at policy inception was actually met on the day of the theft.
For a broader view of how Sold Secure, ART, FUB, and other international ratings compare across lock types and test methodologies, see the overview in bike lock certifications guide for how all the major schemes fit together.
