24/7 domestic locksmith

07347 492822

Service

Mortice Lock Installation

5-lever BS3621 mortice locks for timber doors

Answered 24/7 by the locksmith, not a call centre. Honest ETA confirmed on the call.

  • Fixed quote agreed before dispatch
  • Honest ETA on the call
  • DBS-checked engineers
  • 12-month guarantee
24/7 residential help
Non-destructive entry first
Fixed written quote
Mobile locksmith

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
  • Send a photo for a fixed written quote.

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:

Get a fixed quote

Send your details, then attach clear photos on WhatsApp for a fixed written quote.

By submitting you consent to us contacting you about your enquiry. We never share your details.

Common questions

Sashlock or deadlock?

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.

Will my insurer accept it?

Yes, BS3621 5-lever is the UK insurance standard.

How long does the work take?

Around 90 minutes for a first-time mortice installation.

Do you make a mess?

Almost no mess — we use dust extraction and tidy up fully.

Let's secure your home

Speak to First Line Locksmiths

Send a photo for a fixed written quote. An honest ETA and the agreed scope are confirmed before dispatch.

Answered 24/7 by the locksmith, not a call centre. Honest ETA confirmed on the call.

Related services