MY MI5SION | MI5 - The Security Service

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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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MI5 101

This mission will test how much you know about MI5, what we do, and our history. Get five correct answers in a row to move onto the next mission.

MI5 101

PLAY SECRET MISSION

This mission will test your analysis and communication skills. You’ll be asked to decipher coded messages sent by your agent in emojis. Crack the four encrypted messages to move on to the next mission.

CODE BREAKER

PLAY SECRET MISSION

Intelligence Debrief

This mission will put your memory and judgement skills to the test. You’ll have ten seconds to look at some items of interest to an investigation, and will then be asked a series of questions based on what you saw.

Intelligence Debrief

PLAY SECRET MISSION

Are you MI5 ready?

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School Leavers - You can at MI5

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We embrace diversity

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Latest News

King Charles III

Coronation of King Charles III

Alongside the rest of the nation, we are delighted to celebrate the coronation.

MI5 publishes gender pay gap report for 2022

Today, MI5, MI6 and GCHQ have published their gender pay gap reports