Lock Replacement Service

Old, Damaged or Compromised Lock? We'll Replace It Today.

When a lock is beyond repair, worn beyond reliability, or no longer providing the security your property deserves — Biggs Locksmiths supply and fit quality replacements the same day, at a fair, fixed price.

✅ No Call-Out Fee🏅 BS3621 Approved⚡ Same-Day Service⭐ 5-Star Rated

When to Replace

Six Situations That Need a Lock Replacement

Sometimes a repair isn’t the right answer. Here are the most common situations where replacing the lock is the safest, most cost-effective solution.

01

After a Break-In or Attempted Entry

A compromised lock — whether forced, drilled, or picked — should always be replaced, not repaired. The structural integrity of a breached lock can never be fully restored, and your insurer will almost certainly require it.

Critical — Replace Immediately
“We always recommend replacement after a break-in, not repair. A lock that’s been forced has hidden internal damage that no service can fully reverse.”
02

Your Lock Fails to Meet Insurance Standards

Most UK home insurance policies require at least a BS3621 five-lever mortice deadlock on external doors. If your current locks don’t comply, you may be invalidating your cover — replacement with an approved lock fixes this immediately.

Important — Insurance Risk
“Many homeowners don’t realise their locks aren’t insurance-approved until they make a claim. Don’t wait — we’ll check and upgrade the same day.”
03

The Lock Is Old, Worn, or Unreliable

Locks older than 10–15 years have often lost the precision needed to function securely. Repeated sticking or visible wear are signs that replacement — rather than continued repair — is the right long-term decision.

Recommended Upgrade
“An old lock costs more in repeated repairs than a quality replacement. We’ll give you an honest assessment — repair if it makes sense, replace if it doesn’t.”
04

You’ve Lost Control of Who Has Keys

If keys have been lost, stolen, or distributed to previous tenants or contractors — and you can’t account for all copies — replacement is the only way to restore genuine security.

Security Risk — Replace Today
“This is one of the most common reasons we’re called out. We can usually replace all your locks on the same visit and have new keys ready before we leave.”
05

Upgrading to Anti-Snap or High-Security

Standard euro cylinders are vulnerable to lock snapping — a technique used in the majority of UK residential burglaries. Replacing with an anti-snap, anti-pick, anti-drill cylinder is one of the most impactful upgrades you can make.

Proactive Security Upgrade
“Anti-snap cylinders cost only slightly more than standard ones, but they close one of the most exploited vulnerabilities in UK residential doors.”
06

Moving Into a New Property

No matter how trustworthy the previous occupants, you cannot know how many key copies exist. Replacing all external door locks on moving day is the single most effective security measure a new homeowner can take.

Essential on Moving Day
“We’re frequently booked for moving-day lock replacements. We can often complete a full property the same day keys are collected.”

What We Supply & Fit

Quality Locks. Professional Fitting. Guaranteed.

We supply and fit locks from trusted manufacturers across the full range of door types and security requirements — from standard to maximum protection.

🏅
BS3621 Approved
Insurance-compliant locks in stock
🔒
Anti-Snap Available
TS007 3-star rated cylinders
🔒
Euro Cylinder Replacements
We replace standard cylinders with anti-snap, anti-pick, anti-drill versions. Ideal for uPVC and composite doors. Available in single, double, and thumb-turn formats.
🗝️
Mortice Deadbolt Replacements
Full replacement of 2 and 5-lever mortice locks, including BS3621 insurance-approved models. Fitted to British Standards on all timber door types.
🚪
uPVC & Composite Door Locks
Multipoint locking mechanism and gearbox replacements on all major uPVC and composite door brands. Wide range of compatible parts for same-day completion.
🏠
Rim Nightlatch Replacements
Surface-mounted nightlatch replacements for timber front doors. Yale-compatible and high-security double-locking options available.
📞 Get a Free Replacement Quote

Making the Right Choice

Repair or Replace? Here's How to Decide.

Not sure if you need a full replacement? Here’s an honest comparison to help you understand when each option is the right call.

Situation
Repair
Replace
Lock stiff but structurally intact
Best option
~ Unnecessary
Key snapped inside the barrel
Try extraction first
~ If extraction fails
Lock forced or damaged in break-in
Not sufficient
Always replace
Not BS3621 / insurance non-compliant
Can’t repair to standard
Replace with approved lock
Keys lost or distributed to unknown parties
Doesn’t solve access risk
Only secure option
Lock is 10+ years old with wear
~ Short-term fix
Better long-term value
Vulnerable to snapping (standard euro)
Repair won’t help
Upgrade to anti-snap
Moving into a new property
Doesn’t address key history
Essential for security

Not sure which applies to you? Call us — we’ll give you an honest assessment on the phone, free of charge.

Our Process

From Your Call to New Locks Fitted

A professional, hassle-free replacement from start to finish.

📞
1
You Call
Describe your door and lock. Get a fixed quote immediately.
0 min
🔍
2
We Advise
We recommend the right lock for your needs and budget.
5 min
🚗
3
We Arrive
On-site with the right locks in stock, usually within the hour.
~60 min
🔧
4
Old Lock Out
Existing lock removed cleanly. New lock fitted precisely.
60–90 min
🔑
5
Keys Handed Over
Lock tested thoroughly. Keys provided. Fully secured.
Done ✓

FAQs

Common Questions About Lock Replacements

Everything you need to know before booking your replacement service.

07971 565246
Have a question? Just call us.
📞 Call Now💬 WhatsApp Us
Most single lock replacements take between 20–45 minutes on-site. A full property replacement (front and back door) typically takes 60–90 minutes. We’ll give you a realistic timeframe when you call.
We supply everything. Our vans carry a comprehensive stock of quality locks across all common types and sizes. The cost of the lock is included in your quoted price — there’s nothing extra to purchase.
BS3621 is the British Standard for high-security locks, specified by most UK home insurers as a minimum requirement on external doors. If your policy requires it and you don’t have one, you may be underinsured. We can confirm what your specific policy requires and fit the right lock the same day.
Yes — this is very common. We regularly replace locks for customers who have lost their keys, moved into a new property, or had keys go missing. Our locksmiths can remove the existing lock without a key and fit the new one cleanly.
We carry and fit locks from all leading UK brands including Yale, Chubb, ERA, Avocet, Ultion, and Mul-T-Lock. If you have a preference, let us know when you call and we’ll confirm availability.
Yes — all our fitting work is guaranteed. If anything is wrong with the installation or the lock develops a fault attributable to our fitting, we’ll return and fix it at no charge.

Other Services

You Might Also Need

While we’re with you, we can help with any of these related services on the same visit.

🔐
Emergency Lockouts
Locked out 24/7 — fast response
🔑
Lock Changes
New home or lost keys
Same-Day Service Available

Need Your Locks Replaced? We’ll Get It Done Today.

One call gets you a fixed price, a same-day appointment where possible, and the complete peace of mind that comes with properly fitted, quality locks — guaranteed.