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Congratulations to Her Majesty Queen Elizabeth II

News article - 09 Sep 2015
Director and staff of GCHQ would like to Congratulate Her Majesty Queen Elizabeth II on becoming the UK's longest reigning monarch and the longest standing recipient of Signals Intelligence.
Her Majesty Queen Elizabeth II visiting GCHQ in 2009, 2004 and 1995.

Who we are

GCHQ is an intelligence and security organisation, working to keep Britain safe and secure in the challenging environment of modern communications.


What we do

UK citizens today conduct much of their lives over the internet, as do the Government, the Armed Services, Law Enforcement and industry.

For the UK to be safe and successful, the cyber connections and infrastructure we use need to be safe and secure. GCHQ plays a major role in making that a reality using our expertise and experience.

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How we work

GCHQ strives to ensure that life in the UK isn't compromised through cyber attack or on-line serious crime, employing some of the world's leading experts on Information Security.

Everything we do is governed by law, and overseen by the Foreign Secretary and other Ministers.


Latest news


29 Sep 2015Malcolm John Williamson 1950 - 2015 
Malcolm Williamson, who died recently, was one of the originators of Public-Key Cryptography (PKC) at GCHQ in the 1970s.
21 Sep 2015 - Three years on for the CESG Certified Professional (CCP) scheme
The CESG Certified Professional (CCP) scheme has been setting the standard for UK cyber security professionals for three years now and is going from strength to strength.
08 Sep 2015 - Password Guidance: Simplifying Your Approach
CESG and CPNI advocate a new approach for system owners responsible for determining password policy.
25 Aug 2015 - Cheltenham MP visits GCHQ
Local MP Alex Chalk visited GCHQ’s Cheltenham site for the first time yesterday.
24 Aug 2015 - Director GCHQ stands up to bullying
Director Robert Hannigan recently added his signature to an Anti-Bullying and Harassment Charter in support of the work which is happening in this area at GCHQ.
20 Aug 2015 - GCHQ invites applications for certification of Master’s degrees in Cyber Security
With ten universities already having GCHQ-certified Master’s degrees, GCHQ is pleased to announce a third invitation to UK universities.
06 Aug 2015 - New Fulbright Cyber Security Award open for 2016-17
The US-UK Fulbright Commission is now accepting applications for its new Cyber Security Awards.
05 Aug 2015 - GCHQ research partnership with The Alan Turing Institute
GCHQ is delighted to be working with The Alan Turing Institute in a research partnership on open access and commercial data-analysis methods.

Press Releases

Representatives of local educational establishments visited GCHQ Scarborough on Wednesday to see first-hand how the intelligence agency is training the workforce of the future..
After success in the UK public sector and industry the CESG Certified Professional scheme will now be available to cyber security professionals as a pilot in Canada, New Zealand, Australia and the US.
GCHQ has today launched a new series of placement schemes that will see technology students working alongside world-class technical experts inside the Cheltenham based intelligence and security agency’s iconic ‘Doughnut’ building.
Cyber First logo

CyberFirst - GCHQ Student Sponsorship Opportunity

News article - 25 Jun 2015
CyberFirst is a government-backed initiative to identify young people considering a future career in Cyber Security. We are looking for UK national competition winners, under 25 years old, who are planning to study or are already studying an undergraduate degree in a STEM subject at a UK university.

How does an analyst catch a terrorist?

Without the aid of dark glasses and trench coat, GCHQ works every day to keep the UK safe. One of GCHQ's most important tasks is to identify and analyse the international dimensions of terrorist threats to the UK. Every operation will be different.
For an example of how a potential threat might be identified, what a GCHQ intelligence analyst will do to learn more about it, and what that analyst will do with the information uncovered in the process.

Our journey

History and the Cryptoy app

Cryptoy is a fun, free, educational app about cryptography, designed by GCHQ for use by secondary school students and their teachers.
The app enables users to understand basic encryption techniques, learn about their history and then have a go at creating their own encoded messages. These can then be shared with friends via social media or more traditional means and the recipients can use the app to try to decipher the messages.
Director GCHQ, Robert Hannigan

Director GCHQ writes an opinion piece for the Financial Times

News article - 04 Nov 2014
In his first public statement, the new Director GCHQ Robert Hannigan discusses terrorist use of the Internet and how the security and intelligence agencies need greater support from technology companies to tackle this challenge.

Want to know more about GCHQ's work to protect the UK?

News article - 09 Jun 2015
Our Counter Terrorism and Serious Crime teams tackle some of the most difficult challenges facing the UK.
To show the work that we do in these areas, we have published accounts from our analysts and linguists talking about their jobs.