Emergencies - terrorism

Reporting suspected terrorism

If you suspect somebody of being involved in terrorism in any way or are suspicious, you should report it to people who can help.

You can:

  • call 999 in an emergency
  • call the police counter-terrorism hotline on 0800 789 321
  • contact the Security Service (MI5) directly through their website

You can remain anonymous and you may save lives.

Threat levels

There are five levels of threat, which are set by the MI5 and the Joint Terrorism Analysis Centre. The level they set is based on information gathered by intelligence services and the police about known or suspected terrorist plots.

Current threat levels and what they mean

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