MI5 is directed by the Joint Intelligence Committee (JIC), and the service is bound by the Security Service Act 1989. The service is directed to protect British parliamentary democracy and economic …

Discover how MI5 works to protect against threats to national security through intelligence gathering techniques, partnerships and legislation.

Jan 13, 2026 · 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 …

Jan 18, 2026 · The domestic Security Service, MI5, is already quietly welcoming the prospect of rationalising China’s seven diplomatic sites to one, but a more significant argument is that modern …

The Security Service, MI5, is responsible for protecting the UK against threats to national security. MI5 works with the Home Office .

Dec 9, 2025 · Concerns are raised over whether the MI5 can be trusted to provide full evidence to courts and investigations following the findings of Operation Kenova.

Headquartered in Thames House, MI5, formally known as the Security Service, is a linchpin of the UK’s intelligence community and is globally recognized for its vital role in protecting the nation.