Bletchley Park, or 'Station X', was home to the most famous codebreakers of the Second World War. The 19th-century mansion was the key centre for cracking German, Italian and Japanese codes, providing the allies with vital information. After the war, many intercepts, traffic-slips and paperwork were burned (allegedly at Churchill's behest). The truth about Bletchley was not revealed until F. Winterbotham's The Ultra Secret was published in 1974.
