MI5 - Security Service

MI5 The Security Service

Report a threat

To report an imminent threat call 999 or ring the Anti-Terrorist Hotline on 0800 789 321

To report non-urgent suspicions:
Contact Us here
IF YOU SUSPECT IT, REPORT IT

Current UK threat level

SUBSTANTIAL

Read more about threat levels >>

The Security Service (MI5) is responsible for protecting the United Kingdom against threats to national security. This website provides information about the Security Service, the threats it counters, links to sources of security advice and details of careers with the Service.

Government announces Justice and Security consultation

19 October 2011

The Government has published a consultation paper on justice and security issues to invite public comment on a...

News

Video spotlight:
working for MI5

Watch a video about
how our staff work
together on investigations

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