When the words “I don’t know , nobody knows” in answer to the question “does your door lock conform to BS 3621 as featured in the “Get A Quote, Not A Quiz” as issued by  Aviva Insurance – we all feel for the guy in the advert because there are so many rules and standards out there that are just a mystery to us all.

This now typical question is unfortunately a symptom of the “tick the box” – “job done” mentality that exists in much of society today so if your ever faced with this impossible question here is a layman’s guide to how to respond. It’s also worth remembering that knowing whether your locks are compliant with BS 3621 may be the difference between your home insurance being valid or not.

BS 3621 as the name states is a British Standard which means that someone has taken the time to examine and test the lock to ensure it meets a certain minimum criteria and documented the results of those tests as the standard all new locks must  achieve –  BS3621 specifically targets items such as “lock snapping”, “bumping” and other forms of attack it may suffer at the hands of a burglar.

In order to achieve this standard, a lock must exceed a set minimum level of performance when subjected to the BS Standard specified tests, providing it meets the requirements it is allowed to be Kitemarked by the British Standards Institution – that’s the easy householders check – look for the BS Kitemark then you know your lock meets with BS3621 and the optimum standards for attack resistance, security, quality and reliability.

Why is BS 3621 so important to insurance companies – it’s the industry standard by which they measure the robustness of door locks. If you are unfortunate position of being burgled and the access was through a locked door without a lock with appropriate BS Kitemark, you may find that you do not receive your anticipated level of insurance cover if you have to make a claim.

After you have scurried all around to check for Kitemarks and you have unfortunately there is a problem and you need replacements and you want to be sure your new locks comply – take a look at –


all of our locks exceed the minimum standards of BS3621