On the 4th of July 1940, Eric Roberts left his job at Westminster Bank to undertake secret work for British intelligence. His employers had been told that he was needed for duties of national importance, although they struggled to understand why this ordinary clerk had been chosen. What they did not know was that Roberts had already spent years secretly reporting on extremist political organisations.
Roberts lived with his family in Epsom, Surrey, but his wartime work would take him into a dangerous world of deception. By early 1942, MI5 had given him a new assignment. Using the false identity Jack King, he was to pretend to be a Gestapo representative left behind in Britain to organise people willing to help Germany.
Armed with a forged identification card, Roberts made contact with Marita Perigoe, a committed German sympathiser whose husband had been interned. She believed Jack King was a genuine German agent and began introducing him to others who wanted Britain to lose the war. Roberts carefully maintained his disguise while reporting everything to MI5.
He operated from a flat on London's Edgware Road, where hidden microphones allowed British intelligence officers to monitor conversations. Those visiting him believed they were supplying valuable information to Germany. Perigoe obtained details of military equipment and factory security arrangements, while other members of the group offered information about Britain's military preparations.
Among them was Hans Kohout, who worked for a company involved in secret defence contracts. He supplied Roberts with information about WINDOW, a system being developed to confuse enemy radar. Another sympathiser, Hilda Leech, worked for the Petroleum Board and provided details about fuel storage sites across Britain.
MI5's intention was to identify people prepared to help Germany and prevent sensitive information from reaching the enemy. Although the operation uncovered serious security risks, prosecuting those involved presented difficulties. British intelligence feared that defence lawyers could argue their clients had been encouraged to act by an undercover officer.
Roberts continued his deception for years, maintaining the confidence of people who believed he was working for Germany. His remarkable wartime role remained largely unknown until the release of secret intelligence files in 2014 revealed the identity of Jack King.
The people who trusted him believed they were helping Germany defeat Britain. Instead, they had been handing their information directly to MI5.
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Image info:
Artist unknown, 1939–1945. Via Wikimedia Commons. Public domain – expired UK Crown copyright.