Service

Mortice Lock Installation

5-lever BS3621 mortice locks for timber doors

From £159 20–40 min avg response DBS-checked engineers 12-month guarantee
24/7 Emergency
DBS Checked
Fully Insured
No Call Centre
Local Independent
Card Payments
Fixed Prices
No Hidden Fees

About this service

A 5-lever mortice deadlock to BS3621 is the gold standard for timber doors and required by almost every UK home insurer on front and back entrances. Our engineers cut, fit and align mortice locks neatly and to manufacturer specification.

What's included

  • 5-lever BS3621 Kitemarked
  • Chubb, Union, ERA and Yale supplied
  • Sashlock and deadlock variants
  • Tidy mortice cutting with no visible damage
  • From £159 fitted

Our process

Step 01

Mark

Precise marking for the lock body and faceplate.

Step 02

Cut

Mortice cut cleanly with chisel and router.

Step 03

Fit

Lock body, faceplate, strike and box keep aligned.

Step 04

Test

Key throw, latch and deadbolt all tested.

Where we cover

We provide mortice lock installation across West London, Berkshire and Buckinghamshire, including:

Common questions

Sashlock has a handle-operated latch as well as a deadbolt — used on back doors. Deadlock is dead-bolt only — used on front doors with a night latch.

Recent work

Recent mortice lock installation jobs

Real jobs completed by our DBS-checked engineers. Updated as new work comes in.

See full gallery
Lockouts7 days ago

Non-destructive entry on Yale night latch at 2am

Customer arrived home without keys after a late shift. Picked open the night latch in under five minutes and cut a spare key on the van.

Hayes UB3
20 min
£119
UPVC Repairs9 days ago

Failed Fuhr multipoint gearbox replaced

Door wouldn't lock when handle lifted. Diagnosed a failed Fuhr 856-2 gearbox, swapped on the van.

Maidenhead SL6
1h 20 min
£219
Burglary Repairs11 days ago

Same-night burglary repair with insurance report

Forced UPVC door, snapped cylinder. Boarded, replaced cylinder, full insurance report sent to the customer's broker.

Acton W3
1h 30 min
£249
Anti-snap cylinder upgrade after near-miss — Slough SL1
Lock Changes2 weeks ago

Anti-snap cylinder upgrade after near-miss

Customer noticed scratch marks around the euro cylinder after a suspected attempt. Fitted a Brisant Ultion TS007 3-star anti-snap cylinder and adjusted the strike plate.

Slough SL1
45 min
£139
UPVC Repairs2 weeks ago

Dropped composite door realigned

Customer thought they needed a new door. Replaced flag hinges and packers, restoring full alignment.

Southall UB1
55 min
£139
Whole-home BS3621 lock change on move-in day — Harrow HA1
Lock Changes3 weeks ago

Whole-home BS3621 lock change on move-in day

New owners called the morning of completion. Replaced front and back mortice with BS3621 5-lever Union deadlocks and a new Yale night latch.

Harrow HA1
1h 30 min
£329

Reviews

Mortice Lock Installation — what customers say

Verified · Google
Emergency Lockout

"Snapped key in my UPVC door at 11pm. Engineer arrived in 25 minutes, opened the door without damage and fitted an anti-snap cylinder. Fair price, no fuss."

Sarah J.Slough, SL1
Commercial Locksmith

"Used these for our office on the M4 corridor. Master-key suite installed overnight — zero disruption to staff. Will absolutely use again."

Mark T.Reading, RG1
Burglary Repair

"After a burglary attempt they came within the hour, boarded the door, and replaced the lock with paperwork for my insurance. Genuine professionals."

Priya R.Uxbridge, UB8
Get Emergency Help

Speak to a locksmith in under 60 seconds

Fixed price agreed on the phone before we set off. Average attendance 20–40 minutes.

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