Plain-English problem guide

Door will not lock

Work out whether the problem looks like alignment, handle, cylinder or multipoint-mechanism failure.

A town, city or outward postcode is enough.

You contact providers directly. We do not ask for your exact address.

What to do first

  • Do not repeatedly force the handle
  • Check whether the door locks while open
  • Arrange urgent help if the property cannot be secured
Find suitable providers

Avoid making it worse

  • Slamming or levering the door
  • Taking apart a multipoint mechanism
  • Leaving an unsecured entrance unattended

Methods a locksmith may consider

  • Door and keep alignment
  • Handle or spindle repair
  • Gearbox or locking-strip repair

What changes the cost

  • Door material
  • Mechanism availability
  • Alignment work
  • Out-of-hours timing

What to prepare

  • Door-edge photos
  • Handle behavior
  • Any mechanism brand
Reviewed11 July 2026
PurposeConsumer guidance, not a diagnosis or quote
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