More than 500 schoolchildren took part in a competition to design the cover of the card. They were asked: “What do you think GCHQ looks like on Christmas Day?”, with the additional task of including ...

If you fancy yourself as a budding spy, GCHQ’s Christmas challenge will put your analytical skills to the test. The UK spy agency, which sets an annual quiz aimed at children aged between 11 and 18, ...

GCHQ, the UK’s intelligence agency, released its annual Christmas card on Wednesday, filled with puzzles and hidden codes. The spy agency's "Chief Puzzler", known as "Colin", said the notoriously ...