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1. Explain whether you have another safe exit
Say immediately that you are inside and cannot open the door. Tell us whether another normal, safe exit is available and whether anyone is at risk. Keep your phone charged and nearby. If there is smoke, fire, a medical emergency or an immediate threat to life, call 999 rather than waiting for a locksmith to attend.
2. Describe the handle without forcing it
Does the handle feel unusually loose, drop down, resist movement or move normally while the latch stays engaged? Tell us what you have already noticed. Repeatedly lifting or pulling harder can worsen a failed component. Do not deliberately lock another unreliable door to reproduce the problem, and avoid taking the handle or mechanism apart while the door is shut.
3. Tell us what the key does
A key that turns does not prove every locking point has released. Explain whether the key rotates fully, stops part-way or spins with little resistance. Mention if a key is also inserted on the other side. A cylinder, latch and multipoint gearbox perform different jobs, so these observations help the technician plan an assessment without guessing which part needs replacing.
4. Identify the door and access arrangements
Give your postcode and say whether the affected door is timber, composite, uPVC or metal. Explain whether it is a flat entrance, shared door or another property door. Building management may need to authorise work on communal hardware. If the technician cannot enter the building normally, discuss that arrangement on the call rather than attempting risky access yourself.
5. Ask about opening and the repair afterwards
Opening a failed mechanism with the door closed can be different from servicing an open door. Ask what the initial quote covers, which parts might be needed and how extra work will be agreed. Once the door is open, discuss the cause of the failure and how it will be made usable and secure, rather than assuming a cylinder change alone fixes it.
General guidance cannot diagnose your door remotely. If there is an immediate danger to life, call 999.
Talk to us about your door.
Share the problem and postcode so we can discuss availability and suitable assistance.