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.
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.
MI5 Director General Ken McCallum has welcomed the National Security Act receiving royal assent.
Our director general, Ken McCallum, delivered the annual Bowman lecture at The University of Glasgow earlier this month.