To report an imminent threat call 999 or ring the Anti-Terrorist Hotline on 0800 789 321
Current UK threat level: SEVERE 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.”

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Latest News

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Why MI5 was right for me

Why MI5 was right for me - Being LGBT+ in the Security Service

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MI5 signs Race at Work Charter

We are pleased to announce MI5 is a signatory of the Business in the Community Race at Work Charter.

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