The average English family certainly didn’t have Farm Hall’s full complement of hidden microphones in each room. “I wonder whether there are microphones installed here?” asked Kurt Diebner, one of the German physicists, several days after their arrival. “Microphones installed?” replied Heisenberg, laughing. “Oh no, they’re not as cute as all that. I don’t think they know the real Gestapo methods; they’re a bit old fashioned in that respect.”
