Every lockout feels the same from the doorstep — but to a locksmith, there is no such thing as a generic lockout. Keys left on the kitchen table, keys lost on a night out, a key snapped in the cylinder and a uPVC handle that suddenly will not lift are four different problems, with different levels of urgency, different solutions and very different costs if you handle them badly. This guide walks through each one, and through the things people try in the first ten minutes that turn a quick, cheap job into a damaged door.
First: three quick questions
- Is anyone at risk? A child or a vulnerable person on the wrong side of the door, or something on the hob, changes everything — say so the moment you call a locksmith, because genuine urgency moves you to the front of the queue. If there is immediate danger, call 999 first.
- Is there truly no other way in? Check every door, and think about who holds a spare — partner, parent, a trusted neighbour, your landlord or letting agent if you rent. Ten minutes of phone calls is the cheapest entry there is.
- Which kind of lockout is this? The answer decides what happens next — so let's take them in turn.
The four lockouts, and what each one means
Keys locked inside. The best version of the problem. Your keys are safe, nobody else has them, and once a locksmith opens the door non-destructively you are done — no lock change needed. Tell the locksmith what kind of door it is (wood or uPVC, key or latch) and whether it was locked or just pulled shut.
Keys lost or stolen. Entry is only half the job here, and it is the half people focus on. If your keys are out in the world — especially with anything carrying your address — the cylinder should be changed the same visit. It is a small extra cost, and it is the difference between an inconvenient evening and lying awake wondering who might have your keys.
Key snapped in the lock. Stop turning. The deeper the stub gets worked in, the harder the extraction — and a worn or forced cylinder is usually why the key gave way in the first place, so budget mentally for a possible replacement cylinder along with the extraction.
The door will not lock or open (uPVC handle jammed). This one is mechanical, not a key problem at all. Multipoint mechanisms — the strip of hooks and rollers along the door edge — fail with wear, heat expansion or a dropped door. Do not force the handle: a snapped gearbox turns a modest repair into a bigger one. Lift gently, try while pulling or pushing the door into the frame, and if it still refuses, leave it for someone with the right tools.
What not to do (and why it fails)
- The credit card trick. It only ever worked on simple spring latches. A deadlocked door, a deadlatching nightlatch or any uPVC multipoint door — which is to say, nearly every locked British front door — defeats it completely. What it reliably does is wreck the card and chew the weatherseal.
- Drills, screwdrivers and brute force. Forcing tools into the keyway or attacking the cylinder converts a straightforward pick-open into a drill-and-replace, at your expense. Worse, levering a uPVC door can crack the frame — and frames cost far more than locks.
- Climbing in. A surprising share of lockout-day injuries come from windows, walls and wheelie bins. A first-floor window is not worth a broken ankle.
- Breaking glass. Glazed units in modern doors are expensive, and a hole in your door is a security problem all of its own that still needs boarding the same night.
What a good locksmith will actually do
A professional starts with non-destructive entry — picking, bypassing or manipulating the lock so that nothing needs replacing. On most domestic doors that is exactly how it ends: door open, lock intact, often inside the hour. Drilling is a last resort for genuinely high-security cylinders, not an opening move.
You can protect yourself with three questions on the phone: the full price before anyone travels (one figure, including the call-out — ours is always free), who is coming (a named local locksmith, not a dispatch centre passing the job to whoever bids), and how they will open it ("non-destructive first" is the answer you want). The rogue end of this trade advertises a low price, arrives, drills immediately and presents a very different bill. Anyone vague about price or pushy about drilling has answered your question for you.
Make the next one impossible
- Place spares deliberately — with people you trust, not under plant pots burglars check first.
- If you keep a spare on the property, use a police-approved key safe bolted to brickwork, with a decent code, away from the front door.
- Service a stiff lock before it strands you. A key that needs jiggling and a handle that needs slamming are both locks announcing a future failure. A service visit costs a fraction of a midnight lockout.
- Renters: photograph your keys' whereabouts habitually and know your agent's out-of-hours number — and remember any lock change usually needs their say-so.