Broken Key Extraction

Keys break for several reasons: metal fatigue from years of daily use, a lock that has become stiff due to lack of lubrication, the wrong key being forced in a hurry, or a barrel that has started to seize up from general wear. Nightlatches — the spring-loaded rim locks common on most Fulham front doors — have a relatively narrow keyway, and when a key snaps in one, the broken piece often sits flush with or just inside the face of the cylinder, making it invisible from the outside. With a 5-lever mortice deadlock, the stub can travel deeper into the keyway before stopping. Euro cylinders on uPVC doors present a different challenge: the key turns the cam that drives the multipoint locking mechanism, so if the break happens mid-turn, the door can be left in a partially locked state that prevents both opening and closing. Each scenario calls for a different extraction approach, which is why general household tools — pliers, tweezers, bobby pins — rarely work and frequently make things worse by pushing the fragment deeper or scoring the internal pins and levers.

Understanding what has actually broken matters before any work begins. Our technicians assess which type of lock is fitted, whether the key broke flush with the face or deep inside the barrel, whether any pins or levers have been displaced, and whether the lock was functioning correctly beforehand. That assessment takes a matter of minutes but determines the safest extraction route and tells us whether the lock will be serviceable once the fragment is out or whether a lock change London visit is the more sensible outcome.

Professional broken key extraction relies on purpose-made tools rather than improvised ones. Extractor hooks are slim, barbed picks designed to slide alongside the key fragment and catch on the blade's cuts, allowing the piece to be drawn out in a controlled movement without dislodging the lock's internal components. For fragments that have rotated part-way into the shear line, a plug follower or a tension tool is sometimes needed to hold the cylinder in position before the hook is introduced. Our technicians also carry fine-tipped extractor kits for the narrower keyways found on older Chubb-style mortice locks, which are still common in the period terraces and mansion blocks you find around Parsons Green and Bourne Estate. Where the break has occurred very close to the face of the cylinder — common with euro cylinders — a small pair of needle-nose circlip pliers can be used without any insertion at all, provided enough of the stub is accessible. The aim throughout is a damage-free result: the lock is preserved, the door furniture is untouched, and you are handed a fully working lock at the end of the job.

If you are locked outside your property right now, please call us on 020 7871 7823 — we answer 24 hours a day, every day of the year including bank holidays, and we will send a technician straight away. We are usually with customers in Fulham within about 30 minutes of the call. Before we send anyone out, we confirm an exact up-front quote over the phone so there are no surprises when the work is complete.

Each lock type presents its own extraction challenge, and treating them the same way is one of the reasons DIY attempts often cause additional damage. A Yale-type nightlatch sits on the surface of the door and its cylinder is relatively short, so a broken key rarely travels far — but the auto-deadlock feature on many modern nightlatches means the latch is already engaged, leaving you unable to open the door from either side until the fragment is cleared and the cylinder can turn. A 5-lever mortice deadlock is set into the door edge, the keyway runs horizontally, and the levers sit in a row behind the broken fragment — pushing the stub further in risks displacing a lever, which then needs resetting before the lock will operate. For this reason, our technicians always work from the outside face of the lock, never blindly probing inward. Euro cylinders on uPVC and composite doors are increasingly common across the new-build flats along the Imperial Wharf development and throughout the Fulham riverside. They are also unfortunately vulnerable to snap attacks if they are not anti-snap rated, which is worth raising with your landlord or letting agent if your cylinder does not carry a TS007 3-star rating. When we attend a broken key job on a euro cylinder, we also take a moment to check whether the cylinder itself is anti-snap compliant — if it is not, we can discuss a door lock replacement London service and fit a TS007-rated upgrade the same visit.

For tenants in a rented flat or house, it is worth notifying your letting agent or managing agent once the immediate problem is solved, particularly if the key broke because the lock was stiff or worn — the landlord may have a responsibility to address the underlying condition. We are happy to put the detail of what we found in writing if that helps your conversation with the agent.

Once the fragment is extracted, our technician will test the lock through several full cycles to confirm it operates smoothly and that nothing has been displaced internally. If the lock was already worn or stiff before the break — which is often the reason the key snapped in the first place — we will tell you honestly and explain your options. A like-for-like cylinder change, an upgrade to a higher-security anti-snap cylinder, or a full lock change London can usually all be carried out during the same visit using stock we carry on the van. We are insured for all work we undertake, so you have peace of mind that the job is done properly. The factors that determine your final quote include the type of lock fitted, the complexity of the extraction, the time of day (evenings, weekends and bank holidays are priced differently), travel distance from our base, and whether any replacement parts are needed — all of that is discussed and agreed before we start. For ongoing prevention, the single most effective measure is a small amount of graphite or PTFE lubricant worked into the keyway every six months or so; oil-based sprays are best avoided as they attract grit. A key that is starting to feel stiff, or a lock that takes more effort to turn than it once did, is a warning sign worth acting on before a snap becomes an emergency. If you are ever unsure, call 020 7871 7823 and we can talk it through with you — 24 hours a day, 7 days a week.

When a key snaps, it is tempting to search online and click the first result, but not every result represents a genuine local tradesperson. Some listings are placed by call-centre operations that then subcontract the job to whoever is available, often without the same level of skill or accountability. Our team is based in and around Fulham; we cover SW6 and the neighbouring postcodes, and when you call 020 7871 7823 you speak directly to us — not to an intermediary. We carry out the work ourselves, we confirm an up-front quote before anyone travels, and we do not ask you to pay anything until the job is done to your satisfaction. If you want to satisfy yourself that we are who we say we are, we are happy to confirm our insurance and provide any documentation you reasonably need before we begin. The only credential we ask you to trust is the work itself — and we are confident it speaks for itself across the many jobs we have completed for residents, landlords and letting agents throughout Fulham.

Alongside snapped key removal, our mobile 24 hour locksmith London team handles the full range of residential lock emergencies and planned security upgrades across the SW6 area. The services we provide include: broken key extraction from nightlatches; broken key extraction from 5-lever mortice locks; broken key extraction from euro cylinders; euro cylinder replacement; anti-snap euro cylinder upgrades (TS007 3-star); 5-lever mortice lock replacement to BS3621; nightlatch replacement; wooden door lock repair; uPVC door lock repair London; uPVC multipoint lock mechanism repair; composite door lock repair; door lock replacement London (single and multipoint); deadlock installation; additional lock fitting; door alignment and adjustment affecting lock operation; lock change London for security upgrades; lock change following a lost key; lock change after a tenancy change; communal door lock repair; flat front door lock replacement; forced entry repair and temporary boarding; door frame repair following a break-in; lock health check and security assessment; advice on anti-snap cylinder standards; TS007 3-star cylinder supply and fitting; and landlord and letting agent emergency call-out services. Every job, whether a planned upgrade or a 3am emergency in a Fulham mansion block, is approached with the same care and carried out by trained, insured technicians who know the local area well.