An MI5 "bungle" which emerged during Covid sensationally revealed that Winston Churchill was in on the Valkyrie plot to kill Hitler, according to a leading historian.
The spooks dumped piles of top secret wartime files on the internet during pandemic lockdowns covering the attempt by Colonel Claus von Stauffenberg to blow up the dictator.
But Security Service weeders charged with sifting out sensitive documents belonging to sister spy agency MI6 missed the ones which contained the 78 year old bombshell secret.
