Before leaving Kate planted a tree to commemorate the visit and the completed restoration.
The final survivor of the elite Bletchley Park codebreaking team that cracked Adolf Hitler’s secret messages during the Second World War, Raymond ‘Jerry’ Roberts, died in March aged 93 after a short illness.
Captain Roberts had been the last remaining founder member of a team which cracked the German High Command’s Tunny code, and in doing so shortened the Second World War by at least two years.
Station X - known now as Bletchley Park - was the hub of Britain’s code-backing effort, where hugely talented mathematicians and inventors worked tirelessly to give the armed forces a crucial helping-hand.
As Winston Churchill himself made clear, the accurate information which flowed from Bletchley Park, at a rate which sometimes reached 6,000 messages a day, saved lives and gave Britain a crucial edge in battle.
Codenamed Ultra the intelligence provided crucial assistance to the Allied war effort.
After a few months of breaking of a Double Playfair cipher system used by the German Military Police, the unit was tasked with breaking the German High Command’s most top-level code Tunny.
Despite being Adolf Hitler’s most secret code system and having 12 wheels against well-known 3 wheel Enigma, tens of thousands of Tunny messages were intercepted by the British and broken at Bletchley Park.
By the end of the War, the Testery had grown to 9 cryptanalysts, a team of 24 ATS, a total staff of 118, organised in three shifts working round the clock.