A 110-year-old lemon used by a German WW1 spy to send secret messages from Britain with invisible ink is going on display in MI5’s first ever public exhibition. The blackened and flattened fruit ...

“The Germans duly sent more funds and MI5 used the funds to purchase a car,” exhibition curator Mark Dunton said. “And they christened the car ‘The Muller.’ “They then were reprimanded by the Treasury ...

A briefcase left behind by infamous Cambridge spy Guy Burgess as he fled to Moscow in 1951 is among never-before-seen MI5 artefacts going on display at The National Archives in Kew, South-West London.

These final findings look at the planning and preparation of the attack, and the missed opportunities by MI5 to step in and stop it. At the heart of this brutal tragedy are the 22 people who lost ...

MI5 then mounted its first deception operation, continuing to send letters to the Germans, in Muller's name, with false information. With the money the Germans sent to the false Muller, the Security ...

the security service bought a new office car – for which the exhibition says they were "reprimanded" by the Treasury. A fake Nazi medal, made for one of MI5's most successful wartime agents One ...