Terrorism and threat levels

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 remain anonymous and you may save lives.

You can:

• call 999 in an emergency
• call the police counter-terrorism hotline on 0800 789 321 or report possible terrorist activity online
• contact the Security Service (MI5) directly through their website.

Threat Levels

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

Find out about current threat levels and what they mean on the MI5 website.

Additional Resources

You can also use the Action Counters Terrorism (ACT) app to get the latest terrorism advice and updates.

Citizen Aid app to help with first aid in emergencies.

What 3 Words to help find and share precise locations.

Protect UK for advice on preparing, evaluating and managing risks posed by terrorism.