A festive brainteaser created by Britain’s top spies annually is now available for solving.The Government Communications Headquarters (GCHQ) is one of the UK’s three spy agencies, specialising in gaining intelligence from communications and protecting UK citizens from groups and countries who wish to do harm financially.Naturally, as a world-leading intelligence, cyber and security agency, it attracts some of the brightest brains. It has analysts to produce intelligence reports, specialist mathematicians, linguists, and a large number of technical staff.
