To report an imminent threat call 999 or ring the Anti-Terrorist Hotline on 0800 789 321
Current UK threat level: SEVERE Read more about threat levels >>
MI5 salutes Jeremy Heywood in gratitude for the life and service of a truly great public servant.
The enduring terrorist threat and accelerating technological change Address by the Director General of the Security...
James Smart Lecture by the Director General of the Security Service, Dame Stella Rimington.
Director General speaks on terrorism, technology and oversight
Address by the Director General of the Security...