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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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MI5 marks LGBT+ History Month 2021

This February, MI5 is proud to be marking LGBT+ History Month with this year's theme being 'Body, Mind,...

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MI5 publishes Gender Pay Gap report 2020

MI5, along with SIS and GCHQ, has published its Gender Pay Gap report for 2020.

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