Can you solve the special #BBCBreakfast Christmas quiz set by codebreakers at GCHQ? As the nation's spy agency organises its own annual challenge there is an extra one just for our viewers https://www.bbc.co.uk/news/uk-67707647 | BBC Breakfast

Can you solve the GCHQ Christmas challenge? Chief puzzler 'Colin' had some advice for Graham Satchell on #BBCBreakfast on our exclusive live broadcast from the HQ of the national spy agency https://www.bbc.co.uk/news/articles/cwypg29358jo | BBC Breakfast

This is a tiny GCHQ office compared to their main headquarters in Cheltenham, and in this location they deal with cyber security so often face off to the private sector for advice on tackling, amongst other threats, Chinese government hacking. #GCHQ #cybersecurity #secretcode | City Tours - The London Spy