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What we do

We support the Prime Minister and Deputy Prime Minister, and ensure the effective running of government. We are also the corporate headquarters for government, in partnership with HM Treasury, and we take the lead in certain critical policy areas.

CO is a ministerial department, supported by 17 agencies and public bodies.

Read more about what we do

We work on these topics

  1. Government efficiency, transparency and accountability

    Openness and transparency can save money, strengthen people's trust in government and encourage greater public participation in decision-making. Read more

  2. Community and society

    The government is working to help people take action to solve their own problems and create strong, attractive and thriving neighbourhoods. Read more

  3. 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

  4. Foreign affairs

    The government works to promote and protect UK interests internationally, and works with other countries to make progress on issues of mutual concern like trade, climate change, security and economic development. Read more

  5. Defence and armed forces

    The government works to defend the UK against threats to our national security, and to defend the interests of the UK and our allies in the world. Read more

  6. 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. Managing major projects more effectively

    We're improving the way major projects in government are managed, so projects are carried out more efficiently and effectively.

  2. Establishing stability in Afghanistan

    How the UK is helping Afghanistan to become a more secure nation with international support.

  3. Informing the debate on Scotland's constitutional future

    How the UK government is making the positive case for Scotland to remain in the UK.

See all of our policies

Our ministers

Our management

Contact CO

General enquiries

Correspondence Team
70 Whitehall

London
SW1A 2AS

Efficiency and reform enquiries

ERG Service Desk
Cabinet Office
Rosebery Court
St Andrews Business Park

Norwich
Norfolk
NR7 0HS

Freedom of information requests

FOI Team
Cabinet Office
Room 3.32
1 Horse Guards Road

London
SW1A 2HQ

Media enquiries

High profile groups within CO

Corporate information

Read about the types of information we routinely publish in our Publication scheme. Our Personal information charter explains how we treat your personal information.