When Should You Change Your Locks?
There are many reasons to change your locks — here are the most common situations our customers contact us for.
Moving Into a New Property
Always change your locks when moving into a new home. You never know who has a copy of the old keys — previous owners, estate agents, contractors, cleaners, or neighbours. Changing your locks gives you complete control over who has access to your property. We can also provide a security survey to identify any other vulnerabilities in your new home.
Lost or Stolen Keys
If your keys have been lost or stolen, change your locks immediately. Even if you think they'll turn up, someone could have copied them or noted your address. We provide emergency lock changes across the UK with same-day service. We can also install keyless entry systems to eliminate the risk of lost keys in the future.
After a Break-In
After a burglary, your locks may be damaged or compromised. We provide emergency lock changes and security upgrades after break-ins. Our engineers can also board up damaged doors and windows while permanent repairs are arranged. We provide full documentation for insurance claims and recommend security improvements to prevent future incidents.
Worn or Faulty Locks
Worn or faulty locks are a security risk and can cause lockouts. We replace all types of worn or faulty locks with high-security alternatives. Signs of a worn lock include difficulty turning the key, the key sticking, or the lock feeling loose. Don't wait for a complete failure — a proactive lock change is cheaper than an emergency callout.
Change of Tenancy
Landlords should always change locks between tenancies. It's a legal requirement in many cases and protects both the landlord and new tenants. We provide fast, affordable lock changes for landlords and letting agents. We can also install master key systems for properties with multiple tenants or shared access areas.
Security Upgrade
Upgrade your locks to BS3621 British Standard or anti-snap cylinders for maximum security and insurance compliance. Many insurers require BS3621 locks on final exit doors. We can also upgrade to smart locks for keyless entry, or install high-security restricted key systems that prevent unauthorised key duplication.
Lock Types We Change
BS3621 5-lever mortice deadlocks for timber doors. Insurance-approved and highly secure. We install deadlocks from Chubb, Union, Yale, and ERA. Available in brass, chrome, and satin finishes to match your door furniture. All mortice deadlocks come with a 12-month warranty and compliance certificate for insurance purposes.
Anti-snap, anti-pick, anti-drill euro cylinders for UPVC and composite doors. TS007 3-star rated cylinders provide maximum protection against lock snapping attacks. We stock cylinders from Yale, Ultion, ABS, and Avocet. Available in various sizes and finishes including brass, nickel, and chrome.
Full multipoint lock mechanism replacement for UPVC doors. All brands covered including Yale, GU, Fuhr, Winkhaus, Maco, and Mila. We carry full mechanisms, gearboxes, and individual locking points on every van. Our engineers can also adjust door alignment to prevent premature mechanism failure.
Rim nightlatches for front doors. Standard and high-security options available. We install traditional Yale nightlatches as well as modern auto-deadlocking versions that automatically lock when the door closes. Available with internal snibs for day mode and escape functions for fire safety compliance.
Keyless entry smart locks from Yale, Tedee, Nuki, and August. App and keypad controlled with remote access management. Smart locks are perfect for Airbnb hosts, families, and tech enthusiasts. We can integrate smart locks with existing home automation systems including Alexa, Google Home, and Apple HomeKit.
High-security commercial lock changes for offices, shops and business premises. We install master key systems, restricted key systems, and digital locks for commercial properties. Our commercial locks meet insurance requirements and can be integrated with access control systems for complete security management.
Lock Change Pricing
Transparent fixed pricing — no call-out fees, no hidden charges.
| Service | Price | Time | Notes |
|---|---|---|---|
| Standard Euro Cylinder Change | From £49 | 15-30 min | Labour only, lock extra |
| Anti-Snap Cylinder Change | From £69 | 15-30 min | TS007 3-star rated |
| Mortice Deadlock Change (BS3621) | From £89 | 30-60 min | Includes lock |
| Yale Nightlatch Change | From £69 | 20-40 min | Includes lock |
| UPVC Gearbox Change | From £89 | 30-60 min | Parts included |
| Full Multipoint Mechanism | From £149 | 45-90 min | All brands |
| Smart Lock Installation | From £129 | 30-60 min | Lock not included |
| Master Key System (per lock) | From £99 | 30-60 min | Suite pricing |
| Commercial Lock Change | From £79 | 30-60 min | All types |
| After-Hours Surcharge (10pm-6am) | £20 | — | Added to base price |
* All prices include labour. Lock hardware costs are additional unless specified. VAT may apply.
Lock Type Comparison
Compare different lock types to find the right one for your needs.
| Lock Type | Security | Price | Insurance | Best For |
|---|---|---|---|---|
| Standard Euro Cylinder | Basic | £15-£30 | No | Budget option |
| Anti-Snap Cylinder | High | £40-£80 | Yes | UPVC/composite doors |
| BS3621 Mortice Deadlock | High | £60-£120 | Yes | Timber doors |
| Yale Nightlatch | Medium | £40-£80 | Sometimes | Front doors |
| Smart Lock | High | £150-£400 | Varies | Tech enthusiasts |
| Master Key System | High | £80-£150 | Yes | Commercial properties |
| Restricted Key System | Very High | £100-£200 | Yes | High-security homes |
| Digital/Electronic Lock | High | £200-£500 | Varies | Offices, commercial |
British Standard & Insurance-Approved Locks
All of our products come with a six-month warranty and a service check if required as well as exceptional after-sales service. If you're looking to find the closest locksmith near you that is available 24/7 for emergencies then you've found it.
Please do not hesitate to contact us for a lock change quote and for further information for your home or office security. Our UK services cover London, Manchester, Birmingham, Leeds, Sheffield, Bristol, Liverpool, Reading, Wolverhampton, Slough, Enfield, Clapham, Harrow, Hackney, North London, Kensington, Surrey, Northampton, Greenwich, Barnet, Brixton, Chelsea, Chiswick, Dartford, Ealing, Finchley, Ilford, Orpington, Potters Bar, Romford, Salford, St Albans, Stevenage, Sutton, Twickenham, Wimbledon and more.
Need a Lock Change?
Call us today for a free consultation and quote. We can usually attend the same day.
033 3305 2993Get a Free QuoteLock Change FAQs
Get Fast Emergency Lock Change
Call our locksmith team now for a free quote. Available 24/7 across London and the UK — no call-out fee.
Lock Change Case Studies
Real lock changes and security upgrades completed by Keys4U engineers across the UK.
Wandsworth Door Replacement: Peabody Trust Housing
Wandsworth Door Replacement: Peabody Trust Housing
How Keys4U replaced a broken door for Peabody Trust in Wandsworth, salvaging the original hardware to keep costs down.
E15 UPVC Mechanism Replacement: Valesco Housing
E15 UPVC Mechanism Replacement: Valesco Housing
Full multipoint locking mechanism and handle replacement on a UPVC door for Valesco Housing in the E15 area.
Stevenage Fire Door Replacement: Ezytrac Property
Stevenage Fire Door Replacement: Ezytrac Property
Fire door inspection discovered a door beyond repair. Full FD30 replacement with fire-rated hardware and compliance certification.
E1 Window Restrictor Installation: Notting Hill Genesis
E1 Window Restrictor Installation: Notting Hill Genesis
Key-operated sash window restrictors installed for NHG in the E1 area to ensure child safety compliance.
Lock Security Tip
Practical, expert-verified security advice — updated daily. Share with family and friends to help keep homes and businesses safer across the UK.
A door that doesn't close flush causes multipoint locks to partially engage, leaving them vulnerable.
Previous Tips
Multipoint locks on UPVC doors engage 3–7 locking points simultaneously — ensure all points engage correctly.
Lock bumping uses a specially cut key to open pin-tumbler locks in seconds — anti-bump cylinders eliminate this risk.
3-star cylinder locks provide snap, pick, bump and drill resistance — the gold standard for UK front doors.
Nightlatches (Yale-type) alone do not meet most UK insurer requirements — combine with a deadlock.
A lock with a hardened steel insert resists drill attacks, which are the most common professional burglary method.
Our DBS-checked locksmiths identify vulnerabilities most homeowners never notice — free of charge.