Broken Key Extraction
A snapped key lodged inside a lock is one of those problems that tends to happen at the worst possible moment — returning home late to a flat on Magdalen Road, stepping out of a terraced house near Earlsfield station just as the door clicks shut, or struggling with a stiff mortice lock after a long day. The break almost always happens inside the barrel, where the key has been weakened by repeated use, a slight bend, or simply metal fatigue, and what remains is a fragment that can be difficult or impossible to remove without the right tools and experience.
Open 24 hours, 7 days a week · Fully insured
Earlsfield Locksmith is a mobile locksmith London service operating around the clock across the Wandsworth area. Our trained, insured technicians carry specialist extraction equipment on every call and come directly to you, wherever you are in SW18 or the surrounding postcodes. The goal in every case is to retrieve the broken fragment without causing damage to the lock mechanism itself, so that the lock can either continue in service or, if it has been compromised, be replaced cleanly and cost-effectively.
What we do
Available 24/7
Day, night, weekends and bank holidays — a real local locksmith answers and sends a fully-stocked van.
We come straight away
Based in Wandsworth, we send a locksmith straight away — we're usually with you in about 30 minutes.
Fully insured
Vetted locksmiths, a clear price on the phone, and no surprise add-ons when we arrive.
Damage-free entry
We pick and bypass locks the right way, so most lockouts are solved without drilling anything.
Why Keys Snap Inside Locks — and Why It Matters Which Lock Type You Have
Keys break inside locks more often than most people expect. The three lock types our technicians encounter most frequently in Wandsworth homes are the Yale-style nightlatch, the five-lever mortice deadlock, and the euro cylinder fitted to uPVC and composite doors. Each presents a different extraction challenge, and the approach that works cleanly on one can cause damage to another. A nightlatch barrel is relatively narrow, with limited clearance around the key channel, so a broken tip is usually pushed further in by the remaining key stub and can spin out of reach if the lock is turned before extraction is attempted. A five-lever mortice deadlock — the type most insurers require to meet BS3621 — has a deeper keyway and levers that must be held in a neutral position before the fragment can be coaxed out. A euro cylinder, common on modern uPVC front and back doors across Earlsfield and the wider Wandsworth area, is particularly unforgiving: the fragment often sits flush with the face of the plug, leaving almost no purchase for improvised tools.
This distinction matters because the right extraction technique is lock-specific, not universal. Using a bent wire, a hairgrip, or anything not designed for the purpose almost always makes the situation worse — pushing the fragment deeper, scratching the internal components, or jamming the levers. Our technicians assess which lock type is involved before selecting from a set of purpose-made broken key extractors, hook picks, and plug followers that allow controlled, damage-free removal in the majority of cases.
Broken Key Extraction Across Nightlatches, Mortice Locks and Euro Cylinders
For a nightlatch — the spring-loaded latch most commonly associated with Yale-pattern keys — the extraction process involves carefully inserting a thin hook extractor alongside the broken fragment, engaging the serrations on the key blade, and drawing the piece out in a single controlled movement. Because the nightlatch barrel rotates freely when the door is on the latch, it is essential that the cylinder is held stationary throughout; any rotation drags the fragment into a position where it locks against the housing. Our technicians carry cylinder-stabilising tools that hold the plug in the neutral position while extraction is performed.
Mortice deadlock extraction requires a different set of steps. The lock must first be confirmed as fully retracted or fully thrown — a half-locked mortice is the scenario most likely to result in the key fragment being under spring tension, which complicates removal significantly. Once the lever stack is in a stable position, a purpose-made extractor is threaded into the keyway alongside the fragment. Euro cylinder broken key removal is often the most delicate of the three. The plug diameter is small and the tolerance between the key blade and the cylinder housing is tight. If the break has occurred cleanly across the blade, our technicians can frequently remove the fragment intact; if the break is ragged or the metal has deformed, light lubrication and a rotating extractor are used to work the piece clear without bending the internal pins or springs. In cases where the cylinder has been visibly damaged — perhaps because someone has already attempted removal with the wrong tool — a straightforward cylinder replacement may be the cleaner solution, and our technicians carry appropriate replacements on the van.
When Extraction Is Not Enough — Lock Change London and Cylinder Replacement
Successful broken key extraction leaves the lock mechanism intact and functional in most cases, but there are circumstances where replacement is the right outcome rather than a last resort. If the key broke because the lock itself was stiff, corroded, or already worn — which is common in older Wandsworth properties, particularly Victorian and Edwardian terraced houses that still have their original mortice locks — extracting the fragment restores access but does not solve the underlying problem. A lock change London call is often the logical next step, and our technicians can carry out door lock replacement London on the same visit rather than requiring a return appointment.
For euro cylinders in particular, it is worth noting that the break can sometimes be a symptom rather than a cause. Cylinders that have been attacked using the cylinder-snapping technique — a method used by burglars who apply force to the outer section of the cylinder to break it at a deliberately engineered weak point — will often show a clean break near the cam. If there is any sign that the break was caused by deliberate force rather than normal key fatigue, our technicians will recommend replacing the cylinder with an anti-snap, TS007 3-star rated euro cylinder, which is designed to resist this method of attack. Landlords, letting agents, and housing associations managing properties across the Wandsworth borough often specify these higher-security cylinders as standard, and fitting one after an extraction call is a straightforward upgrade that provides meaningful additional protection.
What Happens When You Call Us — Our Mobile Process for Locked Out London Situations
When you call 020 3757 5840, the first thing we do is ask a few short questions: which type of lock is involved, whether any attempt has already been made to remove the fragment, and your address in the Wandsworth area. This allows us to give you an exact, confirmed quote before anyone sets off — there are no hidden additions when the technician arrives. The factors that determine the final quote include the type of lock, the time of day (evenings, weekends and bank holidays are costed differently), travel distance from our current position, and whether any parts such as a replacement cylinder are required. We confirm the figure on the phone and again before work begins, so you are never presented with a surprise at the end.
Because we are a 24 hour locksmith London service, our response is the same at 2am on a Wednesday as it is at midday on a Saturday. We send a technician straight away and are usually with you in around 30 minutes, though this can vary depending on where in the borough we are when you call. For locked out London situations where a broken key is involved, speed matters — but not at the expense of a clean, controlled extraction. Our technicians take the time to assess the lock before they touch it, which is what makes damage-free outcomes achievable in the majority of calls we attend across SW18 and the surrounding area. If you are dealing with a uPVC door lock repair London situation — perhaps a multipoint lock where the cylinder has also been affected — we carry the diagnostic tools and parts to handle that on the same visit. Call 020 3757 5840 and we will come to you.
Covering Earlsfield, Wandsworth and the Surrounding Area as Your Emergency Locksmith London
Earlsfield Locksmith covers the full Wandsworth borough on a mobile basis, which means we come to your door rather than asking you to travel to us. Whether you are locked out of a flat in a block near Southside Shopping Centre, a mid-terrace on Garratt Lane, or a garden flat on one of the quieter residential streets off the Earlsfield Road, our technicians know the area and can reach you efficiently. We also serve the adjacent postcodes regularly, so if you are just over the boundary in Tooting, Balham, or Wimbledon, do not hesitate to call. As an emergency locksmith London team, our coverage is built around being genuinely useful to real people at real times of need, not around restrictive service boundaries.
Frequently asked questions
Can a broken key always be removed without damaging the lock?
In the majority of cases, yes. When the break is clean and no prior attempt has been made to remove the fragment using improvised tools, our trained technicians can retrieve the piece without affecting the internal mechanism. The cases where damage is more likely are those where the fragment has been pushed deeper by a previous attempt, where the key broke at an angle inside the keyway, or where the lock was already worn before the break occurred. Our technicians assess the situation before starting work and will tell you honestly if replacement is the more practical route.
Should I try to remove the broken key myself before calling you?
We strongly advise against it. The most common household items people reach for — tweezers, bent wire, a knife blade, a hairgrip — are either too wide to fit alongside the fragment or too smooth to grip the key's serrations, and all of them risk pushing the piece further into the barrel or scratching the internal components. A fragment that could have been extracted cleanly in a few minutes can become a full cylinder replacement job after a failed DIY attempt. The safest step is to leave the lock untouched and call 020 3757 5840 — we answer 24/7.
How much does broken key extraction cost?
We do not quote figures in advance of knowing the specifics, because the final price depends on a combination of factors: the type of lock involved (nightlatch, mortice deadlock, or euro cylinder), the time of day you call (evenings, weekends and bank holidays are priced differently), our travel distance at the time of your call, and whether any parts such as a replacement cylinder are needed. What we do guarantee is that you receive an exact, confirmed quote on the phone before anyone sets off. There are no additions when the technician arrives.
My euro cylinder snapped — is that the same as a key breaking inside the lock?
Not exactly. A broken key leaves a metal fragment inside the cylinder's keyway, and the cylinder itself is usually undamaged. A snapped cylinder is a different scenario: the outer section of the cylinder body has broken away, often as a result of cylinder-snapping attack, which is a burglary method that exploits a design weakness in older or lower-grade cylinders. If your cylinder has broken in this way, extraction is not the solution — you need a cylinder replacement, ideally with an anti-snap, TS007 3-star rated unit. Our technicians can identify which situation you have and carry appropriate replacement cylinders on the van.
What if the broken key is in a communal entrance or a lock I do not own?
Our technicians will ask a few questions when you call to establish your connection to the property. For tenants in a block of flats, we may need details of your tenancy or contact with your letting agent or managing agent, particularly if the lock in question is on a communal door maintained by a housing association or freeholder. We handle these situations regularly across the Wandsworth area and can advise you on the fastest legitimate route to getting access restored. We may also suggest notifying your letting agent so that any required lock change is properly recorded and authorised.
Can you replace the lock on the same visit if the extraction does not work out?
Yes. Our technicians carry a range of replacement euro cylinders, and in many cases carry parts suitable for mortice deadlocks and nightlatches as well. If extraction is not viable — or if the lock is so worn that replacement is the more sensible outcome — we can carry out a door lock replacement London on the same call. We will confirm any change to the quote before we begin, so the final cost remains clear and agreed before any work takes place.