The secret history of MI6 - from the Cold War to the present day.

From Bletchley Park to cyber-attacks in the twenty-first century, this is the untold story of computers and spies: past, present and future

Gordon Corera uses declassified documents and extensive original research to tell the story of MI14(d) and the Secret Pigeon Service for the first time. `This is an amazing story' Simon Mayo, BBC Radio 2 Between 1941 and 1944, sixteen thousand plucky homing pigeons were dropped in an arc from Bordeaux to Copenhagen as part of 'Columba' - a secret British operation to bring back intelligence from those living under Nazi occupation. The messages flooded back written on tiny pieces of rice paper tucked into canisters and tied to the legs of the birds....