Lock Installation
Installing a lock from scratch is a different job to swapping one — a fresh case has to be mortised into the door, the keeps cut to match, and everything squared so it locks first time. Knightsbridge Locksmiths installs new locks on timber, composite and period doors across Knightsbridge and London, whether you're adding a deadlock, kitting out a renovation, or securing a door that has never had a lock.
When a Fresh Install Makes Sense
New locks go in for reasons a swap can't cover — a door with nothing but a latch, a renovation that needs the whole property equipping, or an upgrade to hardware a step above what was there. Tell us the doors and the aim, and we'll spec the right locks for the job.
A Door With No Deadlock
Some timber doors have never carried more than a latch. We mortise a fresh case in and hang a BS3621 deadlock so the door genuinely locks.
Renovation or New Build
A refit is the moment to install locks properly across every door at once. One visit sets a consistent standard through the whole property.
Stepping Up the Security
Where the existing hardware is basic, installing a higher-grade lock is a real upgrade rather than a like-for-like change.
One Team to Install the Right Locks
Deadlocks, nightlatches, euro cylinders, multipoint gear and smart locks — whatever a door needs gets specced, supplied and installed by the same engineer, priced before we travel and itemised on the invoice after.
Installed to a Standard Worth Having
A lock installed square, in the right grade, is worth far more than a better lock hung badly. We install to recognised British Standards and cut every case and keep to fit, so the door closes and locks without a fight.
BS3621 as standard
Five-lever mortice deadlocks and kitemarked cylinders installed where insurers expect them.
Cases cut clean
Fresh mortices chiselled precisely, so a new lock sits flush even on solid period timber.
Keeps cut to match
Strike plates and keeps set so the bolt lands square and throws its full depth.
Consistent across doors
A whole property installed to one standard, so every door behaves the same way.
Getting a New Lock Installed Right
Specced for the door
Advice on the grade and type that actually suits your timber, composite or period door.
Priced before we set off
Describe the doors and the quote you're given holds all the way to the invoice.
One clean install
Marked and measured before any cut, so a brand-new lock looks like it belongs.
Local to SW1, SW3 and SW7
Based on Montpelier Street, we're quick across Knightsbridge and nearby.
How a Lock Installation Goes
- Tell us the doors
How many, what material, and whether it's a single deadlock or a whole property to equip.
- Specced on site
On arrival we measure each door and recommend the grade and type to install.
- Priced up front
Supply and installation quoted before we start, with nothing added after.
- Installed and tested
Mortised in, keeps cut, aligned and cycled through, then handed over with keys.
Lock Installation, Neighbourhood by Neighbourhood
New locks go in for different reasons across Central London — here's what our installation work tends to involve in four of the areas we're called to most.
Lock Installation Knightsbridge (SW7)
Renovated flats around Chester Square often reach completion with beautiful doors and no locks fitted yet. We install a full set to one standard, so every door in the flat locks the same way.
Lock Installation Chelsea & Belgravia (SW3 / SW1X)
New retail fit-outs off Sydney Street need locks installed to meet a lease before opening. Our engineer specs and installs to the exact grade the paperwork calls for.
Lock Installation South Kensington (SW7)
Period doors around Thurloe Square sometimes have never carried a deadlock, only an original latch. Mortising a fresh case in adds real security while keeping the door's character.
Lock Installation Pimlico & Belgravia (SW1P / SW1E)
Houses around Warwick Way going through a refit are the ideal time to install better locks throughout. Fitting them all at once sets a consistent, insurance-ready standard.
Where We Install Locks
Based at 4 Montpelier Street in SW7, we install locks across Knightsbridge, Belgravia, South Kensington and Chelsea, with wider cover through the SW1 postcodes and central London. One new deadlock or a whole property to equip, the callout works the same.
Knightsbridge & Belgravia
- Chester Square
- Eccleston Street
- Elizabeth Street
- Ebury Street
- Chester Row
South Kensington
- Egerton Terrace
- Alexander Square
- Thurloe Square
- Pelham Crescent
Chelsea & Brompton
- Sydney Street
- Elm Park Road
- Carlyle Square
- Paultons Square
Home or business, the routine holds: spec the right lock for each door, install it square and clean, and leave everything locking on the first turn.
FAQs — Lock Installation
What's the difference between installing and replacing a lock?
Replacing swaps a like-for-like lock into an existing housing. Installing means fitting a lock where there wasn't one, which usually involves mortising a fresh case into the door.
Can you install a lock in a door that's never had one?
Yes. Cutting a new mortice into solid timber or a composite door is routine, finished so it looks like it was always there.
What locks do you install for insurance?
Most commonly a BS3621 five-lever mortice deadlock, or a kitemarked euro cylinder on a multipoint door — both of which meet standard policy wording.
Can you install locks across a whole property?
We can. A renovation or a new purchase is the ideal moment to install every door to one consistent standard in a single visit.
Do you supply the locks, or should I buy them?
Either works. Supplying and installing in one visit is usually simpler, though we're happy to install locks you've already bought.
How long does an installation take?
A single new lock is usually installed within an hour or so. A full property takes longer, which we'll set out in the quote before starting.