Lock Change & Repair Service — British Standard Parts
Worn, damaged, or compromised lock? We supply and fit replacement locks from leading brands, including BS3621-rated locks as standard.
Step by step
How It Works
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Assessment
We inspect the existing lock to determine whether repair is viable or a full replacement is the better option — and we explain the trade-offs clearly.
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Quote before work
You receive a fixed price before we start. No hidden charges for labour, call-out, or standard parts.
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Supply and fit
We carry a wide range of British Standard cylinders, deadlocks, and multipoint locks on every van, so most changes are completed in a single visit.
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Test and handover
We test the new lock thoroughly and hand over all keys before leaving. We also advise on any door adjustment needed for a smooth action.
Transparent pricing
Lock Change & Repair
Starting from
£49
per job — exact price confirmed before we start
Includes parts (standard cylinder or lock). Premium locks extra.
- No call-out fee
- Quote before we start
- No fix, no fee
Lock Change & Repair Service
A working, secure lock is the foundation of your home or business security. Whether your lock has worn out gradually, been damaged, or you simply want to upgrade to a higher standard, FastLockAssist provides a straightforward supply-and-fit service with no call-out fee.
When to Change Your Locks
There are several common situations where a lock change is the right choice:
After moving into a new property — This is the single most important time to change your locks. Previous owners, tenants, tradespeople, and their associates may all have copies of the keys. A lock change is cheap compared to the cost of a break-in.
After a break-in or attempted break-in — Forced entry often damages the lock or frame. Even if the lock looks intact, the internal mechanism may be compromised.
After losing your keys — Especially if the lost keys have your address on a keyring or were stolen rather than simply mislaid.
When a lock becomes stiff or difficult to operate — Worn cylinders and mechanisms cause progressive failure. A stiff lock today can become a locked-out situation tomorrow.
When upgrading for insurance compliance — Many home insurance policies require a minimum of BS3621 five-lever mortice deadlock on the front door. We can advise on what your policy requires.
Repair vs Replacement
We always assess the existing lock first. In many cases, a barrel replacement (for euro cylinder locks) is sufficient and significantly cheaper than a full lock change. For mortice locks, worn levers can sometimes be adjusted; for UPVC multipoint locks, it’s often the cylinder or the gearbox that needs replacing rather than the full mechanism.
We’ll give you an honest assessment and a clear price for both options if both are viable.
What We Carry
Every FastLockAssist van is stocked with:
- Anti-snap, anti-pick, anti-drill euro cylinders (various sizes)
- BS3621 five-lever mortice deadlocks
- BS3621 sash locks
- Rim locks and nightlatches
- UPVC multipoint gearboxes and cylinders
- Composite door lock cylinders
If you need a specialist or non-standard lock, we can source and fit it, usually within 24 hours.
Local engineers
Lock Change & Repair — Available in Your Area
Select your city for local response times and a dedicated phone number.
Frequently Asked Questions
Common questions about our lock change & repair service.
How do I know if I need a lock change or just a repair?
If the lock is worn, stiff, or has had keys cut many times, a replacement is usually more cost-effective. If the mechanism has failed suddenly (e.g. snapped key, jammed bolt), repair or barrel replacement is often sufficient. We'll assess on arrival and advise honestly.
Do I need to change my locks after moving into a new house?
Yes — we strongly recommend it. You have no way of knowing how many keys are in circulation from previous occupants. A lock change gives you complete control over who has access.
What brands of locks do you fit?
We carry locks and cylinders from leading UK brands including Yale, Mul-T-Lock, Ultion, ERA, and Avocet. We recommend locks that meet BS3621 — the minimum standard required by most home insurers.
Can you match the new lock to my existing keys?
In some cases, yes — particularly for euro cylinder replacements within the same brand. However, for security reasons we usually recommend re-keying rather than matching old keys.
How much does a lock change cost?
Lock change prices start from £49 for a standard cylinder replacement and run up to £129 for more complex installations with premium parts. We quote before starting.
Available 24 / 7 — No call-out fee
+44 7871 596411Need lock change & repair right now? Call for immediate dispatch. Fixed price confirmed before we start.