Secret Intelligence MI6
Responsible for collecting Britain's foreign intelligence to help defend the nation from a range of threats. Based at Vauxhall Cross in London.
Secret Intelligence Service (SIS)
Operates world-wide to collect secret foreign intelligence in support of the British Government's policies and objectives; includes information about legislation and accountability, careers, history, and a FAQ. [Previously known as MI6].
Security Service (MI5)
Responsible for protecting the United Kingdom against threats to national security. Information about their role, activities, governance, and history.
Security Service Act 1989
Highlighting the report presented to the Prime Minister in 2000 along with the Scottish Parliament. Includes the full printable official ducument.