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uk Personal safety & immediate danger door lock tampered • lock looks picked • keyhole scratched • lock forced entry signs • attempted break in • possible burglary • return home suspicious door • door won’t unlock normally • lock cylinder damaged • lock feels different • someone tried my door • latch area damage • came back to disturbed lock • home entry attempt • front door security scare • door handle tampering • worried someone is inside • signs of break in

What to do if…
you notice signs your door lock has been tampered with since you last left

Short answer

Don’t go inside. Get to a safer place nearby and contact the police: call 999 if you think there’s any immediate risk or someone could still be inside; otherwise contact them via 101 (or your local police force’s online reporting).

Do not do these things

  • Don’t go in “just to check quickly,” even if the door still seems locked.
  • Don’t keep trying the key, forcing the handle, or attempting a quick repair right now.
  • Don’t call out through the door or confront anyone you can’t see.
  • Don’t touch the lock/handle/doorframe more than you already have, or start cleaning up if you’ve already gone inside.
  • Don’t post about it publicly (including that your home is empty).

What to do now

  1. Create distance and pause. Step back from the door. From where you are, look for anything else unusual (open window, moved curtains, unfamiliar marks, lights changed).
  2. Move somewhere safer to make calls. A neighbour’s home, a nearby shop/café, or your locked car is better than standing right outside your door.
  3. Contact the police using the safest option.
    • Call 999 if there’s any chance someone is inside, you see an open entry point, you heard something, or you’re simply not sure.
    • If there’s clearly no immediate danger, call 101 or use your local police force’s online reporting. Tell them: your address, what looks different about the lock/door, when you last left, and whether anyone should be inside.
  4. Wait outside until police say it’s safe. Stay in a secure place. If you can, keep a clear view of the entrance without making yourself obvious.
  5. Preserve the scene without handling it. If it’s safe and you’re not delaying urgent help, take a few photos from a distance (lock, doorframe, nearby windows) and then stop. Don’t touch the lock, handle, or doorframe.
  6. If you rent or live in managed housing, notify the right person after you’ve contacted police. Ask about emergency lock changes and how access will be handled (for example, who will attend and when).
  7. If you already went inside and now feel unsure: leave immediately, get to a safer place, and call 999 if there’s any possibility someone could still be there.
  8. When you speak to police, ask what reference you should record. You may be given an incident or crime reference number, which can be useful later (for example, for insurance or housing).

What can wait

  • You don’t need to decide right now whether to change locks, upgrade security, or buy alarms/cameras.
  • You don’t need to do a full inventory of what’s missing immediately.
  • You don’t need to book a locksmith before police have advised it’s safe to re-enter (unless you’re explicitly told to).
  • Calls to insurers, arranging repairs, and updating neighbours can wait until you’re safe.

Important reassurance

It’s normal to feel shaky, angry, or “silly for worrying.” Lock damage can have innocent explanations, but treating it as a safety issue first is the safer choice—and it’s okay to prioritise caution.

Scope note

This is first-steps-only guidance for the minutes and hours after you notice possible tampering. Follow-up actions (repairs, insurance, longer-term security) can happen once the immediate risk is resolved.

Important note

This guide provides general information, not legal advice. If you feel in immediate danger or think someone may be inside, call 999.

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