Revealed: The British MI5 mastermind who turned British Nazi spies into unwitting double agents

The loyal MI5 agent known as Jack King made it possible for the secret service to control every move by Britain’s enemy.

16:42 03 March 2014

MI5 agent known as Jack King, posed as an agent of Hitler to trick hundreds of Fifth Columnists. He went undercover to neutralise hundreds of Nazis sympathisers during World War and was able to control groups who were trying to aid the Fascist cause; extraordinary secret papers revealed today.

 

In 1940, a band of traitor was plotting to hand Second World War victory to Adolf Hitler’s Nazi. Maps of military defences, plans for experimental jet fighters, reports of amphibious tanks and anti-radar technology – all were passed on to a man the spies knew as an undercover Gestapo officer. These could have changed the outcome of the war.

 

The Nazi symphatisers believed they were passing secrets to Berlin. However, all the information went straight to MI5, which made a replica of Iron Crosses to reward the members of King’s networks for their loyalty.

 

Jack King, also referred to by the initials SR, began his mission by trying to infiltrate the engineering firm Siemens Schuckert, one of the forerunners of the present-day Siemens.