Lock Replacement Services — Upgrade Your Security Today

Looking to replace lost keys, upgrade to anti-snap cylinders, or install insurance-approved British Standard BS3621 locks? Our mobile technicians carry full stock for same-day installation.

Insurance Approved BS3621
Anti-Snap & Anti-Drill Protection
Express Same-Day Fitting
Zero Call-Out Fee
DBS Vetted Local Engineers

Professional Lock Changing & Security Upgrades

Whether you've just moved into a new property, lost your keys, or experienced a faulty cylinder, changing your locks is the single most effective step to ensure home security.

We supply and fit high-security replacements for all door types—including uPVC multipoint mechanisms, composite front doors, wooden mortice locks, and commercial night latches.

All of our replacement locks comply with UK insurance requirements (BS3621) and feature advanced anti-snap, anti-pick, and anti-drill resistance.

Call 731 2158 704

Request a Lock Change Quote

Types of Locks We Replace

Fully stocked vans carrying standard and high-security hardware for immediate fitting.

uPVC & Composite Euro Cylinders

Anti-snap 3-star euro cylinders engineered specifically to protect uPVC and composite doors from lock-snapping attacks.

BS3621 Mortice Locks

5-lever sashlocks and deadlocks required by standard UK home insurance policies for timber front and back doors.

Night Latches & Rim Cylinders

Traditional surface-mounted Yale-style latches with auto-locking functionality for communal and domestic front doors.

Keyed-Alike Systems

Operate multiple doors in your home or office using a single master key for maximum convenience.

Commercial High-Security Locks

Heavy-duty locks, shutter locks, and digital keypads designed to secure business premises and storefronts.

uPVC Multipoint Gearboxes

Replacement central gearbox mechanisms for multipoint locking systems when door handles fail to lift.

Transparent Lock Replacement Rates

Clear, competitive pricing with zero hidden call-out fees.

Standard Euro Cylinder

From £69

  • ✔️ Standard uPVC & patio fit
  • ✔️ Includes 3 new keys
  • ✔️ 12-month warranty

Anti-Snap High Security

From £89

  • ✔️ 3-Star Sold Secure diamond rating
  • ✔️ Anti-snap, anti-pick, anti-drill
  • ✔️ Ideal for external doors

BS3621 Mortice Lock

From £79

  • ✔️ 5-lever insurance compliant
  • ✔️ Solid wooden door installation
  • ✔️ Includes keys & faceplate

💡 Exact costs are provided upfront over the phone or on-site before work begins.

Our 3-Step Lock Replacement Process

STEP 1

Assessment

Our locksmith inspects your existing door and recommends the optimal replacement lock.

STEP 2

Precision Fitting

We replace the old lock cylinder or mechanism using professional tools for smooth operation.

STEP 3

Testing & Key Handover

We thoroughly test the new keys and lock functions before handing over your completed setup.

Areas We Cover Across London

Providing fast, mobile lock replacement services right to your door: