To report an imminent threat call 999 or ring the Anti-Terrorist Hotline on 0800 789 321
Current national threat level: SEVERE Read more about threat levels >>
To report an imminent threat call 999 or ring the Anti-Terrorist Hotline on 0800 789 321
Current national threat level: SEVERE Read more about threat levels >>
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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.”
Latest News
view ALL NewsSeptember 2019 release of historical MI5 files
MI5 has released a new batch of historical files to The National Archives, where they are now available to view. The...
MI5 supports National Inclusion Week
For the fourth year in a row, MI5 is joining in with celebrations of National Inclusion Week.
Me, myself and MI5
Black History Month has given us the opportunity to reflect on how MI5 is perceived and experienced by black...
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