February 11 Queen Elizabeth ends winter break at Sandringham, takes public train back to London

February 13 The Queen welcomes The Hon. Vicki O'Halloran to Buckingham Palace for a private Audience to mark her appointment as Administrator of the Northern Territory in Australia.
His Excellency Mr. Milton Inniss is greeted by The Queen as he arrives for an Audience to mark his appointment as High Commissioner for Barbados in London.
February 14Today Her Majesty The Queen marked the centenary of @GCHQ at their first home as the ‘Government Code and Cypher School’ and a former top secret location, Watergate House #GCHQ100

Today @GCHQ tackles the most serious cyber, terrorist, criminal, and state threats as one of Britain’s three intelligence agencies.
The Queen with Director of @GCHQ Jeremy Fleming, Chief of #MI6 Alex Younger and Director General of #MI5 Andrew Parker

The Queen is shown the 1939 Royal Codebook @GCHQ, used to write coded messages that were exchanged between the Royal Household and Government about Royal visits such as HM’s 1947 visit to South Africa.
Princess Elizabeth was referred to as '2519' and Princess Margaret '6101'

The Queen meets codebreaker Ruth Bourne who worked as a Bombe operator @bletchleypark #WW2 and the current winners of #CyberFirst, @GCHQ code breaking competition for girls aged 12-13.
Together they represent two generations of women in the world of cyber security #GCHQ100


As part of #GCHQ100, Her Majesty unveiled an historic plaque containing two secret, hidden messages - a nod to the code-breaking minds who established @GCHQ one hundred years ago.
Can you break the code below?
