British intelligence chiefs tried to guess Hitler's plans by studying his horoscope, according to files released by the National Archives.

Hungarian Ludwig von Wohl persuaded senior intelligence figures that he could replicate the forecasts of the Nazi leader's personal astrologer.

He claimed that if London knew what astrological advice Hitler was getting, then they would know his next move.

But the security service MI5 had warned that von Wohl was a "charlatan".