What we do

The National Security Secretariat provides coordination on security and intelligence issues of strategic importance across government. Separately, the Joint Intelligence Organisation produces independent all-source assessments on issues of national security and foreign policy importance. By supporting the work of the National Security Council and the Joint Intelligence Committee respectively, they provide advice on these issues to the Prime Minister and other senior ministers.


The National Security Secretariat is responsible for:

  • providing policy advice to the National Security Council, where ministers discuss national security issues at a strategic level
  • coordinating and developing foreign and defence policy across government
  • coordinating policy, ethical and legal issues across the intelligence community, managing its funding and priorities, and dealing with the Intelligence and Security Committee which calls it to account
  • developing effective protective security policies and capabilities for government
  • improving the UK’s resilience to respond to and recover from emergencies, and maintaining facilities for the effective co-ordination of government response to crises
  • providing strategic leadership for cyber security in the UK, in line with the National Cyber Security Strategy

The Joint Intelligence Organisation is responsible for:

  • providing all-source intelligence assessments for the Prime Minister, the National Security Council and policy makers across government which assess threats to the UK and UK interests overseas
  • giving early warning of the development of direct and indirect threats and opportunities in those fields to British interests or policies and to the international community as a whole
  • maintaining oversight of the assessment of intelligence across government, encouraging professional standards and best practice to improve government’s analytical capability as a whole

Who we are

The National Security Secretariat is headed by Sir Kim Darroch, the National Security Adviser.

The Joint Intelligence Organisation is headed by Jon Day, Chairman of the Joint Intelligence Committee and Professional Head of Intelligence Analysis.

Both the National Security Secretariat and the Joint Intelligence Organisation are based in London.

We work on these topics

  1. National security

    The government works to identify the most pressing risks to our security, and put in place the ways and means to address them. Read more

  2. Public safety and emergencies

    The government provides funding and support for local emergency services including the police, fire and ambulance services, and sets national standards to make sure they are effective and consistent. Read more

Our policies

  1. Keeping the UK safe in cyber space

    Improving cyber security to make cyber space safer for people and businesses and more resilient to cyber attacks and crime.

See all our policies

Our management

  • Jon Day

    Chairman of the Joint Intelligence Committee

Contact National security and intelligence

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Cabinet Office
Room 3.32
1 Horse Guards Road

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