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  • To report an imminent threat call 999 or ring the Anti-Terrorist Hotline on 0800 789 321
  • Current Threat Level: SUBSTANTIAL
  • Find out more
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.

CODE BREAKER

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
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
Latest News
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The terrorism threat level for Northern Ireland related terrorism in Northern Ireland has been reduced to 'SUBSTANTIAL'.

MI5, SIS and GCHQ publish pay gap reports.

Five Eyes conference at Stanford University

The heads of the Five Eyes domestic intelligence agencies today launched new advice to help organisations protect themselves against the security threats posed by nation states.