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.”

Latest News

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MI5 Director General Ken McCallum and FBI Director Chris Wray warn of growing threat posed by Chinese Communist Party.

Hilda Matheson image with rainbow background

This February MI5 is proud to be marking LGBT+ History Month. In keeping with this year’s 'art' theme,...

Fact or Fiction

Terrorism is the biggest current threat to national security
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