Introduction to the Security Service

MI5's mission is to keep the country safe. For more than a century we have worked to protect the UK from a range of threats, whether it be from terrorism or hostile activity by states.

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Hilda Matheson image with rainbow background

This February MI5 is proud to be marking LGBT+ History Month. In keeping with this year’s 'art' theme,...

MI5, along with SIS and GCHQ, has published its Gender Pay Gap report for 2021.

Fact or Fiction

MI5 has a crèche for baby spooks
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