A British agent who saved thousands of Jews from the Nazis is being remembered with a plaque placed outside the British embassy in Berlin. Frank Foley was based in Berlin in the 1930s, working as a passport control officer, and using his position to provide papers for Jewish people. It is believed Foley saved tens of thousands of lives, even hiding people in his own home. Foreign Secretary Jack Straw described him as "a true British hero". Eyewitnesses recall Foley as an unassuming man: a small, slightly overweight man with round glasses. But he was actually Britain's top spy in the city. He not only interpreted the rules on visas loosely, enabling Jews to escape to Britain and Palestine, but he also helped to forge passports. And, despite not having diplomatic immunity, he gave shelter to some people in his own home.