The international terrorist threat to the UK

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Who we are
Who we are

Find out more about MI5’s mission and core values; our people who work to keep the country safe; and our rich and varied history.
What we do
What we do

Find out about the core threats to national security that MI5 exists to protect against.
How we work
How we work

Discover how MI5 works to protect against threats to national security through intelligence gathering techniques, partnerships and legislation.
What you can do
What you can do

Find out how you can play your part in keeping the country safe – either as a member of the public, or as a potential new recruit.
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Fact or Fiction

MI5 once used Wormwood Scrubs prison as our headquarters

Fact Fiction

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