A locksmith can do far more than open a locked door. Domestic and commercial locksmith work can include authorised entry, lock repair and replacement, key cutting, uPVC and multipoint door repair, security upgrades, burglary make-safe work, master-key planning and advice on mechanical or electronic access. The exact scope varies by locksmith, so always check that the business actually offers the specialist service you need.
At Swift Locksmiths, our work is focused on homes and businesses: emergency lockouts, lock repairs and replacements, uPVC doors and windows, lost keys, commercial locksmithing, burglary repairs and practical security assessment. We do not pretend that every job involving security is automatically a locksmith job.
Originally published: 1st February 2024 | Last updated: 1st September 2026
What Locksmiths Do: The Short Answer
- Regain authorised access when a customer is locked out.
- Repair faulty locks and doors rather than replacing parts unnecessarily.
- Replace and upgrade locks when security, wear or lost keys justify it.
- Cut and manage keys for suitable domestic and commercial systems.
- Repair uPVC and multipoint locking faults including many gearbox, handle and alignment issues.
- Support business security with lock systems, key control and physical access planning.
- Know when to refer: complex alarms, CCTV, fire-door certification, glazing or electrical work may require another specialist.
1. Emergency Lockout Assistance
Lockouts are one of the best-known locksmith services. The professional job is to verify authority, assess the lock and regain access using a method appropriate to the door and condition. If the lock has failed, the locksmith may also need to repair or replace it so the property is secure afterwards.
2. Lock Repair
A stiff key, loose handle or unreliable latch does not always mean "new lock". Repair can involve cleaning, adjustment, replacement springs, a new gearbox, corrected keeps or restoring door alignment. Diagnosis saves money when the main security component is still serviceable.
3. Lock Replacement
Replacement may be appropriate after lost or stolen keys, burglary damage, complete mechanical failure, a move into a new home or a security upgrade. The new part should match the door type and customer risk rather than simply copying the old specification.
| Job | What the customer says | What the locksmith actually checks | Possible outcome |
|---|---|---|---|
| Locked out | "The key is inside." | Authority, lock type, lock condition and door state. | Entry only or entry plus repair. |
| Key will not turn | "The lock is broken." | Cylinder, gearbox, key wear and frame pressure. | Lubrication, alignment, cylinder or mechanism repair. |
| uPVC handle is stiff | "I need a new handle." | Handle, spindle, gearbox, strip and door alignment. | Adjustment or targeted component replacement. |
| Lost keys | "Can you make a new key?" | Key-control risk and whether old keys should remain valid. | Duplicate, new cylinder or rekeying depending on system. |
| Burglary damage | "Replace the lock." | Door, frame, hardware and security weakness. | Make-safe plus stronger permanent repair. |
| Business access problem | "We need fewer keys." | Users, zones, staff changes and emergency access. | Keyed-alike, master key or electronic access plan. |
4. Key Cutting and Key Control
Locksmiths can cut many common keys, but not every key should be duplicated casually. Restricted or registered key systems may have authorisation rules, and businesses should control who can request copies. Accurate key cutting also depends on choosing the correct blank and working from a serviceable original or authorised code source.
5. uPVC and Multipoint Door Repairs
Modern uPVC and composite doors often use multipoint mechanisms rather than a single lock case. Locksmith work can include cylinders, handles, gearboxes, full strips, keeps and alignment. The door itself may need adjustment before a new lock can work reliably.
6. Security Upgrades
A locksmith can review whether the existing lock specification matches the door and customer needs. For suitable euro-cylinder replacements, current police guidance recommends a TS007 three-star cylinder. Timber doors may require different standards and hardware, so one product recommendation does not apply to every entrance.
Source: Metropolitan Police, current door and window lock advice, accessed September 2026.
7. Burglary Repairs and Make-Safe Work
After forced entry, the priority is to restore a secure boundary. That may involve temporary measures followed by permanent repair to the lock, frame, door furniture or multipoint system. A good repair addresses the failure point rather than simply fitting the same vulnerable part again.
8. Commercial Locks and Master-Key Systems
Businesses often need more than one key per door. A locksmith can help plan keyed-alike or master-key systems, replace staff-access locks, manage restricted cylinders and advise on the physical side of access control. The right system should follow a clear policy about who needs which doors.
9. Smart Locks and Electronic Access
Some locksmiths install or support smart locks and electronic access systems. These jobs add power, account, firmware and cyber-security considerations to the physical door. The underlying latch, frame and lock must still work mechanically.
10. Security Surveys
A practical survey looks at doors, windows, cylinders, hinges, frames, lighting, key control and how occupants actually lock the property. We prioritise faults and weak points rather than recommending a shopping list of gadgets.
When a Locksmith Is the Right First Call
- You are locked out of a home or business.
- A key is lost, stolen, snapped or stuck.
- A door will not lock or unlock reliably.
- A uPVC handle, gearbox or multipoint system is failing.
- You need locks changed after moving home.
- You need burglary damage made secure.
- You want a lock or cylinder upgrade.
- You need better key control across business doors.
What a Locksmith May Not Be the Right Specialist For
Complex CCTV networks, intruder alarms, fire alarm systems, building-wide access-control software, structural door replacement, glazing and certified fire-door remediation may involve other specialists. A responsible locksmith should say when a job sits outside their competence rather than improvising.
The Best Service Is Often a Diagnosis
Customers often call asking for a specific part. We prefer to identify the cause first. If the problem is alignment, replacing the cylinder will not help; if the cylinder is worn, replacing the whole door would be excessive.
How to Choose a Locksmith
Look for a traceable business, clear pricing, credible local reviews, suitable insurance and a willingness to explain the work. Be cautious with unrealistic headline prices and vague call-centre arrangements that will not identify who is attending.
Our full locksmith service range explains the work we actually provide. You can also read about Swift Locksmiths or contact us.
What a Good Locksmith Visit Should Leave Behind
The immediate problem should be solved, but the customer should also understand what failed and what was repaired. Clear explanation makes it easier to spot the same warning signs in future.
The door should operate normally without extra force or a secret technique. If a handle still needs lifting in a particular way, the underlying fault may not be fully resolved.
Finally, the customer should know what keys or credentials remain valid, what hardware was fitted and what maintenance or follow-up is sensible. Security is stronger when the handover is clear.
Not Sure Which Locksmith Service You Need?
Call Swift Locksmiths on 01372 632 073 and describe the door, lock or security problem.
Contact Swift Locksmiths or call 01372 632 073.