When it comes to home security, not all locks are created equal. A British Standard deadbolt is widely regarded as the gold standard for residential security in the UK — and for good reason. Here's why you need one and how to get it fitted.
What is a British Standard Deadbolt?
A British Standard deadbolt is a lock that meets the BS3621 standard — the UK's benchmark for security locks. To achieve this certification, a lock must pass rigorous tests for resistance to picking, drilling, sawing, and other forms of attack. The BS3621 kitemark is your guarantee of quality.
Why Insurance Companies Require Them
Most home insurance policies require BS3621 locks on external doors as a condition of cover. If you make a claim and your locks don't meet this standard, your insurer may refuse to pay out. Fitting British Standard locks isn't just about security — it's about protecting your insurance cover.
The Difference Between a Deadbolt and a Deadlock
These terms are often used interchangeably, but there is a distinction:
- Deadbolt: A bolt that is moved by turning a key or thumb turn, with no spring mechanism
- Deadlock: A lock that can only be operated by a key (no thumb turn on the inside)
Both can achieve BS3621 certification. The choice depends on your specific security needs and door type.
Five-Lever Mortice Deadlocks
The most common type of BS3621 lock for wooden doors is the five-lever mortice deadlock. These are fitted into the door itself (morticed) and provide excellent security. Deadlock installation by Keys4U ensures correct fitting for maximum effectiveness.
Upgrading Your Locks
If your current locks don't meet BS3621 standards, upgrading is straightforward and affordable. Keys4U's professional locksmiths can assess your current locks, recommend the right replacements, and fit them to the highest standard. Book a lock upgrade today.
