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World War One Commemoration – GCHQ works with The One Show

News article - 02 Sep 2014
To mark the centenary of the First World War, GCHQ has been working with The BBC One Show to show how the British brought secure communications to the trenches in 1915 through the development of the Fullerphone.
Image © Imperial War Museum
Men of the Royal Garriosn Artillery operating a Fullerphone in a shell hole, forward signal post.

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.

Image of a hand making a stop sign

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

Press Releases

GCHQ will today call on the UK public to protect a fictitious aerospace technology company threatened by imminent attack from cyber terrorists. Assignment: Astute Explorer is the latest game from the Cyber Security Challenge UK.
GCHQ certifies Master’s Degrees in Cyber Security The certification of six Master’s degrees in Cyber Security was announced by Minister for Cabinet Office when he visited GCHQ.
His Royal Highness The Prince of Wales, Royal Patron of the Intelligence Services, today paid a visit to GCHQ Scarborough to commemorate the centenary of the oldest continually operating signals intelligence station in the world.  


GCHQ representatives were at the Defence Academy at Shrivenham on 29 August to support the Cyber Security Challenge’s latest event, Cyber Camp.
The NCA has launched a campaign to alert the public to the dangers of internet crime.
GCHQ joined in by turning off the lights in one complete section of its Cheltenham Headquarters.
Rt.Hon Francis Maude - Minister for the Cabinet Office visited GCHQ as minister responsible for delivery of National Cyber Security Strategy to see the continued progress being made on cyber security.
GCHQ welcomed the Rt Hon Philip Hammond MP on his first visit to GCHQ’s Cheltenham headquarters since he was appointed Foreign Secretary on 15 July 2014.
HRH The Prince of Wales using an Enigma

GCHQ Scarborough receives HRH The Prince of Wales in its Centenary Year 

News article - 30 Jul 2014
HRH The Prince of Wales, Royal Patron of the Intelligence Services, paid his first ever visit to GCHQ's station at Scarborough on the occasion of the North Yorkshire site's centenary. 

Our journey


GCHQ has been on a long and fascinating journey from the earliest days of the UK's Signals Intelligence effort at the beginning of World War I to the challenging technologies of today.

Image supplied by Cyber Security Challenge UK, Taken by Mark Livermore

Bletchley Park restoration project opened by HRH The Duchess of Cambridge

On 18 June 2014, GCHQ's spiritual home was honoured to receive a visit from Her Royal Highness The Duchess of Cambridge to mark the occasion of its re-launch following completion of an £8 million restoration project.
A hand using a touchscreen device

Today's technology

GCHQ depends heavily on its use of technology to succeed in its vital intelligence and security mission.

As the digital world changes increasingly rapidly, it demands a furious pace of innovation in our technical systems.