Welcome to GCHQ

Last Updated: 18 Apr 2017
A welcome message from Director GCHQ.

GCHQ is one of the UK's security and intelligence agencies, working with our partners in MI5 and SIS to keep the nation safe, 24 hours a day, 365 days a year. 

It is GCHQ's job to stay one step ahead of those who would do our nation and its people harm. From managing the cyber threat posed by other nation states to preventing terrorist attacks, keeping our children safe online and supporting our armed forces, the exceptional men and women of GCHQ operate on the frontline of global challenges. The newest part of GCHQ, the National Cyber Security Centre, is helping to make the UK the safest place to live and do business online. Click here to learn more about the work they are doing, and what you can do to keep yourself safe online. 

As our adversaries work in secret, so too must GCHQ. We cannot reveal publicly everything that we do, but we set great store by being as open as possible about our activities. We work under one of the most stringent legal and oversight regimes in the world, including the new Investigatory Powers Act. Our operations are authorised by the Foreign Secretary, in line with priorities set by the Prime Minister and the National Security Council. Parliamentary oversight is provided by the Intelligence & Security Committee, while regular scrutiny by independent Commissioners ensures that our activities are always lawful, necessary and proportionate. 

GCHQ will celebrate its centenary in 2019. In World War II, the tenacious and ingenious codebreakers of Bletchley Park played a crucial role in the Allied victory, but that is just the most famous part of a legacy which stretches from our origins at the end of World War I to the present day. Throughout our history, it is the blend of cutting-edge technology, ingenuity and great people which has helped keep our country safe. 

As the centenary approaches, we will be staging a number of events which will tell that story, and which we hope will inspire a new generation to pick up the baton. You'll be able to find out more about that in due course. In the meantime, if you want to keep in touch with what GCHQ is doing, you can also follow us on Twitter

Jeremy Fleming