Independent guidance for the United KingdomLow-data guideGlobal edition

Security and public safety

Terrorism and deliberate threats

Threat levels can change and are not predictions of a specific event. Check the current official level and know the public action for a weapons or terrorism incident: Run, Hide, Tell.

Last checked: 25 August 2026 How we use official sources

Run, Hide, Tell

  • Run if there is a safe route. Leave belongings behind and encourage others without delaying your escape.
  • Hide if escape is not possible. Lock or block entry, move away from doors and silence devices.
  • Tell police when it is safe. Give the location, direction, description and injuries you know without putting yourself at further risk.

Prepare without increasing fear

  • Notice exits and agree a family contact plan at crowded places.
  • Teach age-appropriate safety actions without rehearsing graphic scenarios.
  • Use MI5 and Counter Terrorism Policing for current official information.
  • Report suspicious activity through official channels, but do not profile people by race, faith, nationality or disability.

Dynamic threat information

This site does not display a fixed terrorism threat level because it can change. Use the official MI5 page for the current national and Northern Ireland-related levels and their definitions.

Evidence and official services

Sources behind this guidance

Open the official page for current detail, live services and local instructions. This page was checked on 25 August 2026.