Hitler's Uranium Club
"Hidden microphones uncovered beneath the floorboards of an English country house have shed light on the lives of Nazi nuclear scientists interned there after the Second World War.
Cambridge professor Marcial Echenique came across the cables when he started renovating Farm Hall in Godmanchester, Cambridgeshire, shortly after buying the property in the late 1970s.
He later found out that the estate had been used to house Nazi scientists detained after the war - and that British security services had bugged each room in the hope of hearing their secrets.
The discovery led Professor Echenique to contact the surviving members of the group, known as Hitler's 'Uranium Club', who told him of the 'country club' life they enjoyed at Farm Hall.
In January 1939, nine months before the outbreak of the War, German chemists Otto Hahn and Fritz Strassmann published the results of an historic experiment about nuclear fission.
The German 'uranium project' began in earnest shortly after Germany's invasion of Poland in September… "
https://www.dailymail.co.uk/news/article-3533344/How-hidden-cables-uncovered-beneath-floorboards-English-estate-reveal-secret-country-club-life-Hitler-s-Uranium-Club-detained-WWII.html