Lock Repair
A lock that suddenly refuses to cooperate — whether the key grates to a halt halfway through, the bolt drags back with painful stiffness, or the handle drops lifelessly without lifting the latch — is more than a nuisance. It is an early warning that the mechanism inside is under stress, and in Eltham's older housing stock, where Victorian terraces near Well Hall Road sit alongside 1970s council blocks and newer uPVC-fronted semis, worn or misaligned locks are a surprisingly common call-out. Eltham Locksmith is a fully insured, mobile lock repair service operating across the SE9 area and beyond, sending trained technicians directly to your door, around the clock.
Open 24 hours, 7 days a week · Fully insured
This page covers the most common reasons locks fail — stiff mechanisms, keys that won't turn, handles that won't lift — across a wide range of lock types found on London properties. Whether you have a traditional 5-lever mortice deadlock on a period front door, a multipoint lock on a uPVC composite door, or a rim latch on a communal entrance in a block of flats, our experienced locksmiths diagnose the fault, explain what is needed, and confirm an exact up-front quote before any work begins. We are your local emergency locksmith London residents and landlords in SE9 can call at any hour — including evenings, weekends and bank holidays.
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 Eltham, 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 Locks Fail: The Faults Behind a Key That Won't Turn
Most lock failures share a small set of root causes: accumulated grime and dried-out lubricant inside the mechanism, wear on the key cuts or the lock's internal levers and pins, a door that has dropped or twisted so the bolt no longer aligns cleanly with the keep, or corrosion that has bonded moving parts together. On timber doors in Eltham — especially those facing north or east across open ground towards Eltham Park — seasonal moisture causes frames to swell in winter and shrink in summer, putting the bolt under constant lateral stress. On uPVC and composite doors, it is more often the multipoint lock's gearbox that wears out, or the euro cylinder that develops internal play after years of use. A 5-lever mortice deadlock may become stiff because one or more levers has lost its spring tension, so the key has to force every lever individually rather than them returning smoothly to the neutral position. A nightlatch (Yale-type rim lock) may jam because the internal spring has fatigued or a small fragment of broken key is lodged in the keyway. Understanding which component has failed is the first job of any competent lock repair — it determines whether the fix is a service and lubrication, a component swap, or a full cylinder or lock replacement.
Euro cylinder faults deserve special mention because they are so prevalent across London rental and owner-occupied properties alike. Cylinders that have suffered a snap attack — a known vulnerability of cheap cylinders on uPVC doors — often have internal damage that makes them feel stiff or cause the key to turn only part of the way. If your cylinder shows signs of distortion at the cam, or the key requires unusual upward or downward pressure to operate, that is a sign the cylinder has been compromised and needs replacing with an anti-snap, TS007 3-star rated unit. Our locksmiths carry a range of compliant cylinders so this can almost always be resolved on the same visit.
Lock Repair Across All Common Residential Lock Types
Eltham Locksmith works with the full range of lock types found on London properties. Mortice lock repair — covering both 2-lever and BS3621 5-lever versions — is one of our most frequent jobs, often involving lever re-springing, case cleaning, or bolt realignment. Rim lock repair on communal entrance doors in blocks of flats is another common task, as the constant traffic through shared doors accelerates wear on the nightlatch mechanism and rim cylinder. For properties with older furniture, lever lock repair covers internal door locks where the spindle has worn or the follower has cracked, leaving a handle that spins freely without operating the bolt. Deadlock repair — specifically the stiff or seized bolt on a mortice deadlock that the insurer requires — is a job we approach carefully, since forcing a seized bolt risks cracking the case; instead, we disassemble, clean, and reassemble the mechanism, replacing any worn component before the bolt is tested under load.
Less common but equally important: cam lock repair on internal cabinet or utility metre cupboard doors, where the cam has sheared or the cylinder has corroded; keypad lock repair where the electronic lock is responding to the keypad but the mechanical bolt is not retracting fully, indicating a motor or gearbox fault rather than a software issue; and smart lock repair where a connected lock is mechanically sound but the coupling between the electronic actuator and the physical bolt has slipped or stripped. We also handle adams rite lock repair on aluminium-framed commercial entrance doors — a narrow-stile lock type often found on the glass-fronted units along Eltham High Street — and jimmy proof lock repair on outward-opening doors where the interlocking bolt has seized or the case mounting has shifted. If you are unsure which type of lock you have, that is not a problem: our technicians identify the lock on arrival and explain the fault clearly before quoting.
The Handle Won't Lift and the Door Won't Open — What Is Actually Wrong
A handle that depresses but does not retract the latch, or one that feels completely solid and refuses to move, is one of the most disorienting faults because it can leave you either trapped inside or stuck outside with no obvious way forward. On uPVC doors, the most frequent cause is a failed gearbox within the multipoint lock body. The gearbox translates the handle's rotational movement into the linear motion that drives the hook bolts, rollers, and locking points of the multipoint system up and down the door edge. When the gearbox strips, the handle either turns with no resistance and no result, or locks solid and cannot be depressed at all. Replacing the gearbox — or in some cases the full lock body — restores normal function without damaging the door or frame. As a 24 hour locksmith London properties rely on, we carry common gearbox profiles so most repairs can be completed on the first visit.
On timber doors with a mortice sashlock, a seized follower (the square hole through which the spindle passes) or a broken spindle is usually responsible. The spindle shears over time, particularly if the door is heavy and the handle is used as a pulling aid. Repairing this requires splitting the lock case, replacing the follower or spindle, and reassembling — a straightforward repair for a skilled technician but one that is very easy to worsen with the wrong tools. If you are locked out of a property in Eltham because of this fault, call 020 3757 5833 and we will send a locksmith straight away; we are usually with you in about 30 minutes. Never try to force a seized handle with extra leverage, as this risks snapping the spindle flush with the case, which significantly increases the repair complexity.
What to Expect When You Call a Local Emergency Locksmith London
When you call 020 3757 5833, the first thing we do is ask a few short questions: what type of door and lock you have (or your best description), whether you are locked in or locked out, and your postcode — SE9 and the surrounding SE postcodes are our core area, though we cover a wide range of London neighbourhoods. This lets us confirm an exact up-front price before we despatch anyone, so there are no surprises on the invoice. The price we quote accounts for the lock and door type, the time of day (evenings, weekends and bank holidays are factored in honestly), travel distance, and any parts we expect to need. We do not begin work until you have agreed the price. We are fully insured and our technicians are trained and experienced across the breadth of residential and light commercial lock types — we do not send generalists who happen to carry a lock pick; we send locksmiths who understand mechanisms.
On arrival, the technician will diagnose the fault, confirm whether the quoted scope covers it, and carry out the repair with damage-free methods wherever possible. For upvc door lock repair London jobs — where forcing the door would split a composite skin or crack a uPVC profile — this means disassembling the multipoint lock from the door edge rather than applying any external pressure. For lock change London situations where the repair reveals the mechanism is beyond economic service, we carry replacement cylinders and lock bodies so the job can still be completed on the same visit. After the work is done, we test the lock through its full range of operation with the door both open and closed, hand back every key, and leave the property secured. If you are a letting agent or landlord managing a property in Eltham, we can also provide a brief written summary of the work carried out for your maintenance records.
Frequently asked questions
My key turns but the deadlock won't fully extend — is that a lock repair or a door alignment problem?
Often it is both. The key turning without the bolt reaching its full throw usually means the bolt is making contact with the edge of the keep — the metal plate in the door frame — before it clears the opening. This can happen because the door has dropped slightly on its hinges, because the keep has shifted, or because the bolt itself is bent or the lock case has moved. A trained technician will check alignment first before opening the lock, as a simple hinge adjustment or keep repositioning sometimes resolves the fault without any internal work. If the case does need to be opened, worn levers or a tired spring are the usual findings. We confirm the exact scope and price before starting.
The handle on my uPVC door has suddenly gone completely stiff and won't depress at all — what has happened?
This is almost always a failed gearbox inside the multipoint lock body. The gearbox can seize in one of two ways: it can strip, leaving the handle with no resistance and no result, or it can jam, locking the handle solid. A seized gearbox sometimes coincides with the door deadlocking in the closed position because the last turn of the key drove the hook bolts into the frame before the gearbox failed. If that is the case, do not apply force to the handle or the door. Call 020 3757 5833 and our technician will access the lock mechanism from the door edge, release the door without damage to the frame or the uPVC profile, and fit a replacement gearbox or lock body on the same visit where parts are available.
How do you decide whether to repair a lock or replace it entirely?
We try to repair first wherever it makes technical and practical sense. If a 5-lever mortice lock has worn levers and a tired case spring but the body is otherwise sound, re-springing and servicing it is a proportionate response. If a euro cylinder has been snapped, shows signs of drill damage, or has significant internal play, replacement with an anti-snap, TS007 3-star rated cylinder is the right answer — repairing a compromised cylinder is not safe or cost-effective. The same logic applies to multipoint lock gearboxes: if the gearbox has stripped, we replace the gearbox rather than the entire lock body unless the body is also damaged. We always explain the reasoning clearly before you agree to any work, and we confirm the price up front. The factors that affect the final cost are the lock type, whether parts need to be sourced or are carried on the van, the time of call-out, and travel distance.
Can you repair a lock without damaging the door — I am a tenant and worried about my deposit?
In the vast majority of cases, yes. When a lock has failed mechanically — a seized mechanism, a broken gearbox, a fatigued spring — there is no need to force the door. Our technicians are trained to work through the lock or from the door edge using the correct tools, which means the door, frame, and surrounding paintwork are left undamaged. We understand the position tenants are in, and we are used to working alongside letting agents and managing agents on Eltham properties where the landlord needs to be kept informed. If you are a tenant locked out of a flat in a block near Eltham station or anywhere in SE9, call us and we will advise on what ownership verification we may need before proceeding, in line with standard professional practice.
I have a keypad lock and the door lock repair seems like it might be an electrical fault — do you handle that?
Yes. Keypad lock repair calls often involve a mix of mechanical and electronic faults, and distinguishing between them matters. If the keypad accepts the code and the motor activates but the bolt does not fully retract, the fault is mechanical — a worn coupling, a stripped motor gear, or a misaligned bolt. If the keypad shows no response at all, the fault may be a drained battery, a failed control board, or a wiring issue between the keypad and the motor. Our technicians work through the diagnostic steps to isolate which part of the system has failed before recommending a repair or replacement. For smart lock repair, the same principle applies: we address the mechanical operation of the lock body itself; if the fault is in the app or cloud connectivity and the mechanical function is confirmed sound, we will advise you on that clearly.
What is your call-out charge and how is the final price worked out?
We do not hide costs behind vague descriptions. When you call 020 3757 5833 and describe your lock fault, we confirm an exact price before we come out — there is a call-out charge, and this is stated clearly on the phone. The total price for the job is then built from the following factors: the type of lock and door involved, the time of day (evenings, weekends and bank holidays are priced differently from standard hours), the travel distance to your postcode, and whether the job requires parts carried on the van or any specialist components. Once you agree the price, it does not change unless the fault turns out to be significantly different from what was described — in which case we stop, explain, and re-quote before continuing. We are fully insured and all work is carried out by trained, experienced locksmiths.