MI5 (Military Intelligence, Section 5), [2] officially the Security Service, is the United Kingdom's domestic counter-intelligence and security agency and is part of its intelligence machinery alongside the Secret Intelligence Service (MI6), Government Communications Headquarters (GCHQ), and Defence Intelligence (DI).

Discover how MI5 works to protect against threats to national security through intelligence gathering techniques, partnerships and legislation. Find out how you can play your part in keeping the...

Enjoy one of the most memorable security-service dramas ever! Having only just registered, this review is rather late for the U.K viewers. "Spooks" or `MI-5' in U.S listings is one of the best British drama series produced in a long time.

MI5 protects the UK against threats to national security. Threats can range from terrorism to attempts by states to harm people in the UK and undermine our way of life. We carry out...

Apr 9, 2025 · MI5, intelligence agency charged with internal security and domestic counterintelligence activities of the United Kingdom. It is authorized to investigate any person or movement that might threaten the country’s security.

MI5 exists to protect the UK from threats to our national security, primarily terrorism and threats posed by states. More than 5,000 people work at MI5, bringing together people with lots of...

Jul 10, 2023 · MI5 and MI6 are two iconic intelligence agencies of the United Kingdom. While their functions and areas of operation differ, both agencies play integral roles in safeguarding the United Kingdom from a wide range of security threats.

Jul 7, 2022 · The heads of MI5 and FBI warned of the growing long-term threat posed by China to UK and U.S. interests, in their first joint appearance on Wednesday.

The Security Service, commonly known as MI5, is one of three British intelligence agencies. It is the security agency responsible for counter-intelligence inside the United Kingdom. It gives the government information about hostile activities inside the UK.

Oct 1, 2020 · MI5 is no longer part of the military but it still works closely with it to ensure we all sleep safely at night. MI6 is the agency made famous by James Bond, however the department is officially known as the Secret Intelligence Service.