Locks Repair
Plenty of locks that feel finished are only worn, not broken — a mechanism that sticks, a key that fights the turn, or a bolt that no longer lines up. Knightsbridge Locksmiths repairs and services locks of every type across Knightsbridge and London, freeing what has seized and realigning what has dropped, so a working lock isn't replaced needlessly.
Signs a Lock Needs Repair, Not Replacing
Most locks warn you before they fail — the key gets stiff, the handle needs jiggling, or the door won't lock without a lift. Catch it at that stage and a repair usually costs a fraction of a new lock.
Stiff, Sticking Keys
A key that grinds or needs wiggling points to a worn or dry mechanism. Servicing and easing it often restores a clean turn.
Handle or Bolt Drags
When the latch catches or the bolt won't throw fully, the door has usually dropped. Realigning the keeps brings it back into line.
Loose or Spinning Parts
Handles that wobble and cylinders that turn without biting are worn inside. Replacing the tired part beats swapping the whole lock.
One Team for Every Lock That's Playing Up
Mortices, nightlatches, euro cylinders, window catches and multipoint gears — the same engineer diagnoses the fault and repairs it, priced before we travel and itemised on the invoice after.
Repaired First, Replaced Only If Needed
A lock serviced back to health saves you the cost of a new one, and often keeps your existing keys working. We diagnose the real fault before reaching for a replacement, then swap only the parts that are genuinely worn.
Diagnosed, not guessed
The cause found first — worn levers, a dropped door or a dry cylinder — before any part is replaced.
Your keys kept working
Servicing a cylinder instead of replacing it means the keys you already carry still fit.
Worn parts only
Springs, levers, followers and cams swapped individually where that fixes it, sparing a whole new lock.
Aligned to run smoothly
Keeps and strike plates reset so the bolt throws freely, without force or a lift.
Why a Repair Often Beats a Replacement
Cheaper than a new lock
Servicing, or a single worn part, usually costs far less than supplying and fitting a replacement.
Priced before we travel
Describe the fault and the quote you're given is the one on the invoice.
Honest about the limits
Where a lock is past saving we'll say so plainly, rather than charge for a repair that won't last.
Local to SW1, SW3 and SW7
Run from Montpelier Street, we're quick to reach across Knightsbridge and nearby.
How a Lock Repair Runs
- Describe the symptom
Stiff key, dragging bolt or a loose handle — a quick note or photo helps us bring the right parts.
- Diagnosed on site
On arrival we work out whether wear, alignment or a broken part is behind the fault.
- Priced before work starts
Repair costed and agreed, with the replacement option explained if that's the better call.
- Serviced and tested
Eased, realigned and cycled through until the lock turns cleanly, then handed back.
Lock Repairs, Neighbourhood by Neighbourhood
Locks age differently across Central London — here's what our repair work tends to involve in four of the areas we're called to most.
Locks Repair Knightsbridge (SW7)
Heavy panelled doors around Wilton Crescent swell and settle with the seasons, and a mortice that stuck last winter often just needs easing and realigning. We service it rather than cut a new lock into old timber.
Locks Repair Chelsea & Belgravia (SW3 / SW1X)
Shopfront nightlatches off Cale Street take constant use and start to drag long before they fail. Servicing the latch and follower keeps a busy door working, with no shutdown.
Locks Repair South Kensington (SW7)
Converted flats around Cranley Gardens often share a communal entrance whose cylinder has grown stiff for everyone. A service and light re-key restores a smooth turn without new keys for every resident.
Locks Repair Pimlico & Belgravia (SW1P / SW1E)
Family homes around Warwick Way tend to leave a dragging back-door lock until it won't turn at all. Catching it early means a quick repair rather than a forced replacement.
Where We Repair Locks
Working from 4 Montpelier Street in SW7, we reach Knightsbridge, Belgravia, South Kensington and Chelsea fast for lock repairs, with wider cover across the SW1 postcodes and central London. A single stiff key or a house full of tired locks, the callout runs the same.
Knightsbridge & Belgravia
- Wilton Crescent
- Belgrave Square
- Kinnerton Street
- West Halkin Street
- Lyall Street
South Kensington
- Cranley Gardens
- Roland Gardens
- Drayton Gardens
- Evelyn Gardens
Chelsea & Brompton
- Cale Street
- Markham Street
- Bywater Street
- Britten Street
Home or business, the routine holds: find what's actually worn, service or swap only that, and leave every lock turning cleanly again.
FAQs — Locks Repair
Is it worth repairing a lock, or should I replace it?
Most sticking and dragging locks are worth repairing, and it's cheaper than a new one. Replacement is only worth it when a lock is genuinely worn out or no longer safe.
Can you fix a key that's hard to turn?
Usually. A stiff key normally points to a dry or worn cylinder, which servicing or a light internal repair puts right.
Why won't my door lock without lifting the handle?
The door has probably dropped, so the hooks or bolt no longer meet the keep. Realigning it fixes the problem without a new lock.
Will a repair keep my existing keys?
In most cases, yes. Servicing the mechanism rather than replacing the cylinder means the keys you already have still work.
Do you repair window and uPVC locks too?
We do. Window catches, multipoint gears and euro cylinders are all serviced or repaired, not just mortice and rim locks.
How quickly can you come out?
Same-day visits are usually available from our Knightsbridge base for most SW1, SW3 and SW7 addresses. Call or WhatsApp to check the next slot.