Security
Keeping us all safe
We are responsible for keeping the UK safe from any threat to national security. We work with the police and security agencies to ensure we do all we can.
What we're doing to keep the UK safe
In recent years, we have substantially increased our counter-terrorism efforts. But the threat of attack is real, and constant.
We are working 24 hours a day to keep you safe, and we will do all we can to prevent terrorist attacks.
You can help us
If you know of a threat to national security or you want to report suspicious activity, there are several ways to reach us:
- in an emergency call 999
- call the police counter-terrorism hotline on 0800 789 321
- contact the Security Service (MI5) directly (new window)
You can remain anonymous, and you may save lives.
Find out more:
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Terrorism threat level is 'Severe'- find out more
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Counter-terrorism efforts used to keep us safe
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What can you do to protect yourself from harm
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The laws in place to protect us from terrorism
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Find out how and why surveillance is used in the UK
