Streatham COMMON LOCKSMITH
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Broken Key Extraction

A snapped key lodged inside a lock is one of those moments that stops your day completely — standing outside your front door on Streatham High Road at midnight, or stuck in the hallway of a block of flats on Leigham Court Road with the broken shank buried inside the cylinder, is not a situation anyone plans for. The break usually happens without warning: metal fatigue from years of use, a worn lock mechanism creating extra resistance, or simply a moment of force in the wrong direction. Whatever the cause, the result is the same — you cannot get in, and the wrong response can turn a recoverable situation into a damaged lock that needs full replacement.

Call 020 4530 9860Get a fast quote

Open 24 hours, 7 days a week · Fully insured

Streatham Common Locksmith is a mobile locksmith service operating 24 hours a day, every day of the year, including evenings, weekends and bank holidays. Our trained, insured technicians carry specialist extraction tools and come directly to your door — no shop visit needed. We serve addresses across Streatham, Streatham Common, Streatham Hill and the surrounding SW16 area, and when you call 020 4530 9860 we confirm an exact, up-front quote before anyone leaves to come out to you.

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 Streatham, 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.

01

Why Keys Snap — and What Happens Inside the Lock

Keys are precision-cut from relatively thin brass or nickel-silver blanks, and every time a key is turned it experiences a small degree of torsional stress. Over months and years, particularly in locks that are stiff, misaligned, or in need of lubrication, tiny stress fractures develop along the blade — usually at the shoulder where the key enters the bow, or at a deep cut near the tip. The snap itself is often the final moment of a long process you could not see. In a nightlatch (the spring-loaded Yale-type lock found on most Streatham front doors), the key shears off with the tip still engaged in the plug. In a 5-lever mortice deadlock — the type insurers commonly ask for under BS3621 — the broken section can wedge itself across one or more levers, making extraction trickier without the right tools. In a euro cylinder, common on uPVC and composite doors throughout SW16, the broken piece sits inside the narrow plug channel and can be pushed deeper by an inexperienced attempt to dig it out.

Understanding which lock type holds the broken fragment is the first thing our technician assesses on arrival, because the approach differs meaningfully for each. A nightlatch extraction is usually quicker; a 5-lever mortice with a deeply embedded tip requires a different set of picks and hooks; a euro cylinder may in some cases need the cylinder removed from the door furniture before the fragment can be safely cleared. The goal in every case is to recover the fragment without scoring the plug, damaging the levers, or distorting the keyway — because a lock that is undamaged after extraction can go straight back into service.

front door lock key — Streatham Common Locksmith
02

Broken Key Extraction Across Different Lock Types

For nightlatches, our technicians use slender hook extractors and broken-key pullers sized to fit the narrow Yale keyway without catching on the wafer springs. Because the plug in a nightlatch rotates freely when the latch is in the open position, there is often just enough movement to work the broken tip rearward and grip it at the keyway mouth. For 5-lever mortice deadlocks — the kind with the long, narrow keyhole on a traditional escutcheon plate — the blade tends to snap while the levers are partially lifted, so the fragment is under slight pressure. Releasing that pressure correctly before attempting to draw the piece out is essential; forcing it without doing so risks bending a lever and causing a lock fault that goes beyond the original problem.

Euro cylinders present their own considerations. The plug channel is tighter than a mortice keyhole and the broken section of the key may have rotated slightly as it snapped, sitting at an angle inside the channel. Where the fragment is accessible, our tools can grip and rotate it back to the neutral position before drawing it clear. Where access is obstructed or the cylinder itself is worn, it is sometimes more practical to remove the cylinder, extract on the bench, and refit — or to fit a replacement cylinder if the existing one was already compromised. We carry a range of quality replacement cylinders, including anti-snap and TS007 3-star rated options, so if a replacement is the right call we can complete it in the same visit. If you are in Streatham and need help right now, call 020 4530 9860 — we send a technician straight away and are usually with you in about 30 minutes.

door security hardware — Streatham Common Locksmith
03

Damage-Free Recovery — When It Is Possible and When It Is Not

The phrase 'damage-free extraction' is accurate in the majority of cases, but it is worth being honest about what that means in practice. If the lock was in good condition before the key snapped and the fragment has not been pushed deeper by prior attempts to remove it with a pen, a hairpin, or a screwdriver blade, the chances of a clean extraction are high. The situation becomes more complicated when a key has been worried at and the broken section has migrated inward, or when the lock itself was already worn, corroded, or misaligned. This is why the most important thing you can do before a technician arrives is to leave the broken fragment alone — do not attempt to push, prise, or pull it without proper tools, as this is the most common reason a straightforward extraction becomes a lock replacement job.

Our technicians will always assess the lock and the position of the fragment before committing to a method. Where non-destructive extraction is achievable, that is the approach taken. Where the lock has been compromised beyond recovery — either by the break itself or by prior attempts — we will explain that clearly, give you the options, and let you decide before any further work begins. Transparency at that point is part of how we work, and it means you are never presented with an unexpected bill at the end of the job.

mortice lock door — Streatham Common Locksmith
04

Finding the Right Locksmith London — What to Look for and What to Avoid

When a key snaps at an inconvenient hour — and they frequently do snap at inconvenient hours — the instinct is to find help quickly. Streatham is well served by mobile locksmiths, but it is worth knowing what to look for before you agree to anyone coming out. A professional locksmith should confirm an exact up-front quote on the phone before travelling to you, should be willing to identify themselves on arrival, and should carry appropriate tools rather than resorting to drilling as a first resort. As a 24 hour locksmith London service operating in SW16 and the wider south London area, we always provide a confirmed price on the call — covering the lock type, any parts that may be needed, the time of day, and travel distance — so there are no surprises when the job is done.

Some of the factors that influence the final quote for a broken key extraction include the type of lock involved, whether it is a standard nightlatch, a mortice deadlock, or a euro cylinder; the time of call, since out-of-hours work on evenings, weekends and bank holidays involves different resourcing; whether a replacement cylinder or lock case is needed as part of the resolution; and the location, since travel to some parts of the Streatham area takes longer than others. What never changes is the commitment to confirm that figure before we travel. If you would rather have a specialist find the right solution for your specific lock than attempt anything yourself, that is exactly the approach we take — skilled assessment first, tools second, and a clear conversation at every stage. Call us on 020 4530 9860 any time, day or night.

lock cylinder close up — Streatham Common Locksmith

Frequently asked questions

Can you extract a broken key without damaging my lock?

In most cases, yes. If the lock was in reasonable condition before the key snapped and the fragment has not been pushed deeper by prior attempts, our technicians can usually retrieve the broken section cleanly using specialist extraction tools, leaving the lock fully functional. We assess the situation on arrival and explain the options honestly before beginning — if the lock has been damaged and replacement is the better course, we will tell you that before proceeding.

What should I do while I wait for you to arrive?

The most important thing is to leave the broken fragment alone. Resist the urge to push or prise at it with a pen, coin, or screwdriver, as this is the most common cause of a simple extraction becoming a full lock replacement job. If possible, note which type of lock is affected — nightlatch, mortice deadlock, or euro cylinder on a uPVC or composite door — as this helps our technician arrive with the right tools already prepared. If you are outside your property, move somewhere safe and sheltered while you wait.

How much does broken key extraction cost?

We do not quote figures here because the final price depends on several factors: the type of lock involved, the time of day you call, whether any replacement parts such as a new cylinder are needed, and travel distance to your address. What we can tell you is that we confirm an exact, up-front quote on the phone before anyone comes out to you — so you know the full cost before you agree to anything. There are no surprise charges added at the end of the job.

My key snapped in the euro cylinder of a uPVC door — is that harder to deal with?

Euro cylinders on uPVC and composite doors are one of the more common broken-key scenarios we attend in Streatham. The plug channel in a euro cylinder is narrower than a mortice keyhole, which can make extraction fiddly, and if the broken section has rotated as it snapped it needs to be carefully returned to the neutral position before it can be drawn clear. In some cases we remove the cylinder from the door furniture to work on it more effectively. If the cylinder itself is worn or was already a security concern, we can fit a quality replacement — including anti-snap, TS007 3-star rated cylinders — in the same visit.

Do you operate in Streatham at night and on bank holidays?

Yes. We are a fully mobile service operating 24 hours a day, every day of the year — evenings, weekends and bank holidays included. We cover Streatham, Streatham Common, Streatham Hill and the surrounding SW16 area. When you call 020 4530 9860 our team answers at any hour, confirms your location, discusses the lock type, and provides an up-front quote before a technician travels out to you. We send someone straight away and are usually on site in about 30 minutes, though we cannot guarantee an exact arrival time.

The broken tip is in a 5-lever mortice deadlock — can it still be extracted without drilling?

5-lever mortice deadlocks are more complex than a nightlatch because the broken key fragment is often resting across or between the levers, sometimes under slight rotational pressure from the moment of the snap. With the right extraction hooks and an understanding of how the levers interact, non-destructive recovery is achievable in most cases. Drilling is a last resort that we only consider when the fragment is completely inaccessible and no other method is viable — and even then, we explain the situation and get your agreement before proceeding. If the lock does need to be replaced, we carry 5-lever mortice deadlocks that meet BS3621 requirements, which most home insurers ask for.

Locked out or need a lock fixed? We are on the way.

020 4530 9860