British Standard Locks: Do You Need Them?
When it comes to keeping your home or business secure, there’s a lot of advice out there. One thing you’ll hear time and again is the importance of British Standard locks. But what are they? And do you actually need them?
This guide breaks down exactly what British Standard locks are, why they matter, and whether they’re worth having on your property.
What Are British Standard Locks?
British Standard locks are locks that meet certain quality and security standards set by the British Standards Institution (BSI). If a lock carries this certification, it means it has passed a range of tough tests designed to check its durability and resistance to common break-in methods.
The Main British Standard Lock Types
There are a few different British Standard lock types you’re likely to come across:
BS 3621 – The Most Common
BS 3621 is the standard most commonly used for external doors. To meet this standard, a lock must resist:
- Picking
- Drilling
- Forceful attacks (like kicking or prying)
It’s the go-to for front and back doors, especially on timber doors.
BS 8621 and BS 10621 – Focused on Emergency Exit
These standards are for locks that allow keyless exit from the inside, which is useful for flats, apartments, or properties where fire safety is a concern.
- BS 8621 is commonly used in residential buildings
- BS 10621 allows for an added layer of control, such as locking the exit function when needed
How to Spot a British Standard Lock
It’s easy to check if your lock meets a BS. Look for:
- The BSI Kitemark (a heart-shaped symbol with a tick inside)
- A stamped BS number on the faceplate (like BS 3621)
Why Are British Standard Locks Important?
It’s not just about having a “high-quality” lock. British Standard (BS) locks offer some real-world benefits that can affect your security, your insurance, and your peace of mind.
1. Better Security
These locks go through rigorous testing to ensure they can withstand tampering, forced entry, and other common break-in techniques. That means:
- Tougher resistance against burglars
- Longer-lasting hardware
- More confidence in your home or workplace security
2. They Might Be Required by Your Insurance
Many UK home insurance policies require BS locks—especially on front and back doors. If your locks don’t meet these standards and you suffer a break-in, your insurer could refuse to pay out.
3. Peace of Mind for You and Your Family
Knowing your property is secured with high-standard locks helps you relax—whether you’re home for the evening or away on holiday. You’ve got strong, trusted hardware protecting your doors.
Do You Really Need British Standard Locks?
The short answer? Probably yes—but it depends on your specific situation. Here are some things to think about:
Check Your Insurance Policy
This is the first place to look. If your home or contents insurance mentions BS 3621 (or a similar standard), then it’s not optional. You’ll need to upgrade to stay covered.
How Secure Is Your Area?
If you live in an area with a history of break-ins—or you just want to be extra cautious—British Standard locks are well worth fitting. They’re far more resistant to tampering than budget options.
Upgrading Your Doors or Locks?
If you’re already planning to install new doors or improve your home security, fitting British Standard locks is a smart long-term move. It’s easier to get it right from the start than to replace locks later.
How to Check If Your Current Locks Meet the Standard
Not sure what you’ve already got? Here’s how to check:
1. Look for the BSI Kitemark
If you see the heart-shaped tick symbol on the faceplate, your lock is likely British Standard certified.
2. Check for a BS Number
Common numbers to look for include:
- BS 3621 (most common for external doors)
- BS 8621 (keyless exit from the inside)
- BS 10621 (controlled keyless exit)
3. Ask Your Locksmith
Still not sure? A quick visit from a professional locksmith will clear it up. They can tell you exactly what you have—and what you might need if you decide to upgrade.
Upgrading to British Standard Locks
If you’ve decided it’s time to make the switch, the best thing you can do is contact a professional locksmith. They’ll make sure the lock:
- Matches your door material (wood, uPVC, or composite)
- Is the right type (deadlock, sashlock, nightlatch, etc.)
- Is correctly fitted and insurance-compliant
There are British Standard versions of all major lock types, so you won’t be limited by style or functionality.
Conclusion: Are British Standard Locks Worth It?
Absolutely. Whether it’s to meet insurance requirements, strengthen your home’s security, or just give you peace of mind, British Standard locks are a smart investment.
They’re tough, reliable, and widely recommended by both locksmiths and insurers. If you’re unsure whether your current locks are up to standard—or ready to upgrade—get in touch with a local locksmith who can guide you through the process.
