To report an imminent threat call 999 or ring the Anti-Terrorist Hotline on 0800 789 321
Current national threat level: SUBSTANTIAL Read more about threat levels >>

Introduction

“MI5 investigates threats to national security through the gathering of secret intelligence and by working closely with other organisations and government departments. We do this within a strict framework of legislation and oversight to ensure our investigative powers are only used where it is necessary and proportionate to do so.”

Fact or Fiction?
MI5 has a crèche for baby spooks.

True False

Latest News

view ALL News

International Women's Day: MI5's first female agent runner

To celebrate International Women's Day, we are sharing the fascinating story of Mary Sherer, MI5's first...

Read Full Article ›

ITV documentary - 'Inside MI5'

The documentary showing what life is like for those who work at MI5 was first shown on Thursday 27 February on ITV1.

Read Full Article ›