· 6 min read
What "Insurance-Approved Locks" Actually Means (and How to Check Yours)
Your insurance policy says you need "approved locks" — but approved by whom? Here is a practical guide to checking whether your locks meet your policy requirements.
Guide topic
Legal and Insurance Requirements
What a policy actually requires, how the lock standards differ, and where landlords and tenants stand on changing a lock.
6 guides in this topic · reviewed
What this topic covers
This is the topic where guessing is most expensive. An insurance policy that names a lock standard is a contractual requirement, not a suggestion, and the difference between BS3621, BS8621 and PAS3621 is not cosmetic — they describe different key and thumbturn arrangements intended for different escape and access situations.
The guides here set out what each standard covers and what the common policy wordings tend to require, then say plainly that the wording in your own document is what governs. I can describe how these standards work; I cannot tell you what your insurer will accept, and neither can any article that has not read your schedule.
The tenancy guides cover the other frequent question: who may change a lock, when, and what has to happen with the keys afterwards. That subject has real legal consequences on both sides, so those guides point to the underlying position rather than offering a shortcut around it.
Where these guides stop
This is general explanation, not legal or insurance advice. Your policy schedule and your tenancy agreement contain the terms that actually bind you, and a solicitor or your insurer is the right source for a decision that turns on them.
Start here
BS3621 Locks Explained — Why Your Home Insurance May Require One
BS3621 is the standard most often named in UK home insurance wording, so it is the one worth understanding before reading anything else here.
All 6 guides on legal & insurance requirements
Lock standards, insurance requirements, landlord obligations — the legal side of home security explained clearly.
· 7 min read
Will Your Insurance Pay Out If Your Locks Don't Meet the Standard?
Learn how policy security conditions may affect a claim and why only the insurer and current written terms can determine a particular outcome.
· 6 min read
Do Landlords Have to Change Locks Between Tenants? The Legal Position
Review key-control, tenancy documents, property duties and current legal guidance when deciding whether locks should change between occupancies.
· 8 min read
Can a Landlord Change the Locks? UK Tenant and Landlord Rights Explained
Review current UK guidance on access, eviction and lock changes, then check the tenancy facts and obtain legal advice for a specific dispute.
· 7 min read
PAS3621, BS3621, and BS8621: Which Lock Standard Applies to Your Door?
Compare PAS3621, BS3621 and BS8621 by scope and use, then match only the exact standard named in current written requirements.
· 7 min read
BS3621 Locks Explained — Why Your Home Insurance May Require One
Learn what BS3621 describes, how to check visible markings and why your own current policy or insurer must confirm any requirement.
When reading is not the answer
These guides explain the decision. If you already know what you need doing, the service pages below carry the published starting price, the scope each price assumes and the checks made before any work begins.
Lock UpgradeUpgrade your home security with British Standard BS3621 mortice locks, anti-snap cylinders, and independently certified options matched to the door and any written policy requirement.From £59 →Lock Repair & ReplacementDoor lock repairs and replacements for broken, worn or unreliable locks. Yale nightlatches, mortice locks and cylinders repaired or replaced across Coventry.From £59 →
Not sure which applies? The frequently asked questions cover scope, pricing and timing, and the full price list shows what each starting price includes.
Legal & Insurance — common questions
Click any question to see the answer
Does my insurer require a BS3621 lock?
Some policies name it and some do not. The only reliable answer is in your own policy schedule or endorsement wording, which states the lock requirement as a condition. Check that document before buying anything on the strength of a general article.
What is the difference between BS3621 and BS8621?
Broadly, BS3621 covers locks that are key-operated from both sides, while BS8621 covers locks that can be opened from inside without a key, which matters where escape without hunting for a key is required. The guides set out the distinctions in full.
Can a landlord change the locks while a tenancy is running?
Changing locks to exclude a tenant during a live tenancy has serious legal consequences in the UK, and the guides here explain the general position and where to get advice. Routine replacement between tenancies is a different situation entirely.
Other guide topics
Lock Types and Security RatingsWhat the markings on a lock mean, which standards apply to which lock, and what still has to be measured at the door.Home Security and Burglary PreventionWhere homes are actually entered, which upgrades address which entry point, and how to judge advice that sounds convincing.Understanding Locksmith Quotes and ChargesWhat a published starting price does and does not cover, and which questions make two quotes genuinely comparable.uPVC Door LocksHow multipoint doors fail, how to tell a repair from a replacement, and what to measure before anything is ordered.Locksmith EmergenciesWhat to do first when you are locked out, a key has snapped, keys are lost, or a door has been forced.Seasonal Security GuidesThe security jobs that are worth doing at a particular time of year, and the failures that only show up in certain weather.Coventry and Warwickshire GuidesGuidance written around the housing stock, door types and local sources that actually apply across the Coventry area.
Or browse every locksmith guide in one list.
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